2001 Ford F150 Transmission Service (Flush, Torque Converter, Oil Cooler, Pan & Filter)

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Products used:
AMSOIL Engine and Transmission Flush
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AMSOIL Synthetic Multi-Vehicle Automatic Transmission Fluid
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AMSOIL Fluid Extraction Pump
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[@dmt8365]

You did great mr Insane Oil! Nobody shows you this, they just change the pan gasket and filter and fill what came out of the pan. But you show us how to do it right and save money on a gasket. Thanks

[@gerardtabaloc2276]

Jon, this is the best ever video I saw online that is very professional, process is very well explained slowly and thoroughly without hiding any steps (unlike other bloggers). Thank you so much for the very helpful tip on flushing, changing oil and filter.

[@InsaneOil]

Thank you for the comment. Good luck with your repair.

[@StateofPeaches99]

I'm a mother trying to help her son with a truck repair, this is the best video I have found that I can found step by step. I appreciate your videos! But we want be doing a flush because his ford truck has 200K+ miles, we will be draining. But your video help us understand what to expect when we drop the pan. We are replacing the TCC. Thanks for posting, just an excellent how to.

[@randyshepherd1841]

Just did mine based on this video, thanks! 200k on the truck and the plug was still in the pan.(I have had it for almost a year.)

[@joecaine55]

Randy Shepherd, hows she running to this day...I have 208k and I highly doubt it's ever been serviced

[@AMMOPUNK1]

Jon, you are Fantastic! Very professional and thorough. You give me the confidence to tackle this job myself, I'm anxious to start!

[@amcrae1]

THANK YOU THANK YOU A MILLION TIMES!!! Thank you for showing the position of the lines....that's just what I needed to know!!!!

[@nationaltradesman1781]

Excellent. I was baffled by the yellow plug I found in the pan. Thanks for the answer!!

[@InsaneOil]

Glad the video helped.

[@josevillalobos4241]

breaking my head on the plug! thanks man. great video

[@joseplaceres4172]

Very good video. Thank you for taking the time to deliver such a detailed explanation.

[@broken1965]

Jon the f150 looks cleaner as my 2002 FX4 nice job I live in snow belt so i have repaired all rust and re painted 1/2 the truck. original owner purchased 2003

[@roadkingretired]

Thanks man. I watch 3-4 flush videos and yours by FAR is the best. Plus I too am replacing with Amsoil so super helpful and you got me to go ahead and get the Amsoil trans flush fluid to run. Thanks again.

[@InsaneOil]

I hope you were able to order your Amsoil at wholesale pricing by becoming a preferred customer. www.amsoil.com/offers/pc/?zo=10458

[@UnRefinedHero]

im paying $140 to have this done to my f150 tomorrow. money well spent in my book

[@UnRefinedHero]

ya this one is dropping the pan and changing the filter. they are the most highly recommended shop in my area, and their shop has a big window between the shop floor and the waiting room, so that the customer can watch them as they service your car. they are a little higher priced ($40/ oil change) but they actually do things properly, and inspect your ride for issues.

[@jonothejester]

UnRefinedHero It's always good to have a reputable mechanic that you can trust.

[@Tapanova]

Great video. Helps me to decide whether I’d tackle this job myself or a shop. If anything, it provided me an understanding to ask my service shop the right questions.

[@InsaneOil]

Thanks for the comment. Good luck with whichever route you decide to go.

[@dan2468101214]

Incredibly helpful and clear! After watching the video, I performed the same procedure on my 2000 Ford F-150, and that seemed to clear up the gear slipping.

[@jonothejester]

+dan2468101214 Awesome. Glad it helped.

[@romansroad2007]

Did you use the Ford brand for transmission fluid or something????

[@truthdealer99]

@@romansroad2007 great question. However, its understood that its overall better that you use Ford Motorcraft fluids on their vehicles. Better performance, longevity functionality of inner components etc.

[@vincentrobinette1507]

The thing that makes the biggest difference, is replacing the pickup filter. Any suction restriction on the intake tube causes air bubbles in the fluid, and the pump can't produce enough pressure to ensure full engagement of the clutch packs.

[@vincentrobinette1507]

I recommend leaving the supply line connected to the coolers, so they too, get flushed. You can get adapters that will connect to the return ports of the trans coolers, so it can be directed into the collection container. That also helps remove any residual flush additive, ensuring maximum film strength of the new fluid, to protect gears, bearings and clutches. I typically don't use any kind of flush fluid, I just simply flush with the transmission fluid I intend to use. That eliminates any possibility of solvent diluting the new fluid.

[@InsaneOil]

Agreed. It is always good to make sure all flush product (if used) is removed during this process.

[@vargashumberto1]

Thanks for the video man, very helpful, very professional as well makes me trust you. Thanks for taking your time on making the video

[@jonothejester]

Taking the hoses off at the beginning allows you to determine which hose is the supply and which is the return. Basically it lets you know which way the fluid is flowing and where it will shoot out of when you get ready to do the fluid replacement.

[@christianrichter8226]

Had my feed line blow before, not fun, by the time I was done, all the transmission fluid was swapped, just might as well do the filter now. I had the transmission a little overfilled with fluid for a little while, it just doesn't like to shift as much, I emptied it to the right level once I was sure the leaks in the line were fixed. Gotta love New York and their road salt.

[@CobraR1993]

I have a 2004 crown Victoria. I dropped the valve body and cleaned it out. Also, use a sifon pump to extract the fluid from the pan before you drop it. Its easier that way..

[@stanislas2008]

Very professional and helpful great video thanks

[@ironDsteele]

Great video! AMSOIL is the best, I use it in everything, even my wood splitter. I also run it in my R6, good to have in an engine that spinning 17000 RPM!

[@suggesttwo]

When I got rid of my 93 Vic I dropped the trans to see what causes shudder and slippage because the car that replaced it had the same drive line and transmission problems. I found mayo(oil & water) in the valve body.

[@jonothejester]

After adding the transmission flush, you want to make sure all lines are installed, prior to running the vehicle. This will allow the transmission flush to work its way through the entire system. Afterwards, you will want to disconnect the supply side when flushing the fluid out.

[@vincentrobinette1507]

I usually like to disconnect the return line, and use an adapter on the coolers. that way, you also flush out the coolers, so no residual solvent in them remains to dilute the new transmission fluid.

[@rabuayya1]

Great and helpful video. Very informative. Thanks dude.

[@jonothejester]

Good question. I suppose the only option is to fish it out either with your finger or devise some type of a hook that you can reach up there and grab on to it. I don't even recall if my original filter had a grommet and my video doesn't show the top side of the filter.

[@johnbowman1379]

Thank you very much that little plunger I was worried about

[@InsaneOil]

Thanks for the comment. Was your repair a success?

[@samashpowell]

Awesome video dude. Thanks

[@lokbros100]

Very best explain with detail on video. Thank you so much.

[@deanpiper9095]

just wanted to say great video i did everthing you said but i left the linlet in and had the outlet from rediator trans lines undone and draining threre a hose into old 3ltre plastic milk bottles and started it and ran it until clear good red fluid coming out so therefor it also flushed my trans cooler and no dirty crap or trans flush went back into trans

[@michaelreagan2232]

Great video. Well done.

[@gregoriocampo]

Great video!

[@cavalier389]

Thank you so much for the video, well done, I'm sure is gonna help me a lot

[@trigder128]

Sorry I meant to say great help with this video very good for beginners

[@jonothejester]

I had about 100k miles when I serviced this transmission. However, when I purchased the vehicle it had about 94k miles and I had no records of previous service. If you are running conventional transmission fluid in severe service conditions (towing, in-town only, etc), it is recommended to change the transmission fluid every 30k miles. Amsoil transmission fluid service interval is every 50k miles under the same circumstances.

[@rosskline]

Thanks for the video!

[@Black_Dirt_Contractor]

I recently bought an 02 E250 work van so I could leave my truck at home. It started dying anytime I would take off from O/D or 2nd, and sometimes in 1st. After having it scanned we determined a solenoid for the torque converter is either bad, going bad or just malfunctioning. It had sat for quite some time so we were thinking maybe it's tarnished and he said to run conditioner in it. I'm just going to change filter and fluid like you did in the video. Would this said solenoid be hard to change? I don't think the mechanic knew where it was for sure. Thanks for your help? Also, after watching this video it reminded me I haven't flushed my trucks fluid so I'm doing it at the same time

[@humanmale4610]

thanks for the detailed video

[@jimfrieday6831]

The upper line on the side of the transmission to the cooler is the return line. So the line you want to disconnect from the cooler is the one coming from the lower transmission fitting.

[@bobbystanley8580]

Thanks!

[@exforbrian1]

Great video. One question I'm not sure has been answered or asked is.. If you trans fluid has been mixed with coolant from the radiator, will this push all the coffee colored fluid out? In the end when you say to add till the dark turns to light, will that happen in this case or will the small amount of leftovers in the system continue to make that come out cloudy?

[@robertmckelvey6564]

Man awesome video, I wish you could service my F150 2006. Good job my friend.

[@InsaneOil]

Thank you for your comment. Bring it by, we’ll get it fixed up…I’m in Nebraska.

[@robertmckelvey6564]

@@InsaneOil I'm down here in Georgia my friend. Had the trans worked on, had front seal replaced and torque converter replaced and get it back and ideals with a bad vibration. What would that be?

[@InsaneOil]

@@robertmckelvey6564 I would start with an induction cleaning www.amsoil.com/p/power-foam-apf/?zo=10458 and also clean all the injectors www.amsoil.com/p/p-i-performance-improver-gasoline-additive-api/?zo=10458 , that would rule out anything fuel system related.

[@samashpowell]

Thanks Jon for your great video. Would you happen to know the thread size on the supply line? I was wanting to rig up a adapter with a clear hose to connect to the supply line. Thanks for any info. ~Sam~

[@norcaligurl]

Thank you. incredibly helpful.

[@moneygeewtee]

Great video Jon! I have a '92 F150 and assume the procedure would work pretty much the same way? I a similar service about 6+ years ago. I left out the drain/fill part, which seems to be the most important aspect. Thanks again! :)

[@TIKIMAN198]

5:42 holy shit that is an optical illusion lol

[@sealtite904]

Would it make sense when running new fluid through the system to disconnect the return line instead of the supply to get the old fluid out of the coolers too?

[@miket2885]

good professional job

[@tommyedwards4373]

explained the torque converter nice

[@Imwright720]

This was done correctly and yet some still say oh it’s wrong. He did flush the torque converter.

[@InsaneOil]

Thanks for the comment. I make my best attempt to do to the research prior to any repair...especially when the video is going online.

[@InsaneOil]

@Kiara Wolf That is incorrect. All manufacturers set intervals for changing the transmission fluid. It can often be found in the owners manual or other documentation provided when the vehicle is purchased.

[@handlesaredumb1]

@Kiara Wolf changing the oil won't cause it to go out but may show you problems that the old oil was masking.

[@351cleavland]

Thanks for the reply.

[@AustinsMichaels37]

Great video very well done thank you

[@dsaint9264]

thanks gd video mr.olson im wondering if i should bother doing it one of my trucks has 247000miles on an r100 trans.and the other has 68000 on an r70 neither have ever been done and both run strong

[@SMarti018]

Great Video, I am about to do this to my 04 F-150 but i plan on disconnecting the return line and starting truck like you did but run the truck for a additional for 10-15 more seconds and that will flush out 4-5 quarts from the pan and then i can drop the pan with it being mostly empty and save the mess. I can't see how running the oil out from the return line out into the pan would hurt the engine in any way since the remaining oil is still being sucked out of the pan and draining in for that 10-15 seconds. there is a write up on this online of people using this method as well :)

[@MaxStevenson-ih5ji]

i've been searching all round youtube and i think this is the best way.

[@Musicizmyremedy]

Nice video. I have a 2002 Lexus IS300, what type of transmission fluid should I be using?

[@TheAce232008]

good God I'll take mine to the shop

[@westhavenor9513]

I'm surprised not more people use this method. I've done it on my Mazda5. Great way to change ALL the fluid. Only thing I do differently is I'd never add anything other than AFT to a transmission. Not worth the risk.

[@InsaneOil]

I agree that many prefer to use no flush products. Given that I had no knowledge of the history of the vehicle, my preference is to clean out what sludge is in there. I sold this vehicle about a year ago. No tranny issues in the 10 years after doing this service.

[@Toolaholic7]

Chrysler's automatic transmission Fluid ATF+4 is already synthetic and is the same way with GM starting in 2006,Dextron V.

[@matthewtinker4569]

It is 4WD, 5.4L. The 8th digit is a V on vehicle vin.

[@jamesroberson8749]

ITS the return line from your transmission that you took off the rad< not the supply

[@biggerstuff360]

Also forgot I read where some people were having problems getting the gasket to stay on while installing. After cleaning take and run a small bead of black rtv on the pan and tran. Put the gasket on the pan over the rtv and let it sit for 30 mins. It will start to set but just on the outside it will still be soft in the middle. Then u can put the pan on its so much easier!

[@westhavenor9513]

No! Just use a couple zip ties and remove them once you get a couple bolts loosely tightened through the pan.

[@101Volts]

Just saying, my 1990 Mercury Grand Marquis has a drain plug on the torque converter. How nice, I saw a torque converter that doesn't have one (read on); on second thought though that may be a good thing so that I don't flush it too quickly. What would you recommend for a 1984 Chevy Caprice that I have no record of regarding maintenance excepting what I myself have maintained in recent years? (For another note, the car tires on it when I got it in 2010 were at least 15 years old!) I was thinking to just simply change the fluid in the pan, slowly, until it shows up as red. (it's black or very dark brown now.) I don't want to take it to a flushing place, it already leaks fluid when I shift from park and I read someone saying "Don't flush the transmission (to the mid 1970s car you got) just change the fluid in the pan; the pressure from a flushing machine may blow the fluid seals."

[@davidrubio9286]

Thank you

[@rafaelortiz6686]

Hi there Mr.Olson i have a 2001 ford f 150 4.6 and it was running fine and all the sudden it didnt want to shift gears. the check engine light was on so i borrow a scanner and it gave me codes of shifter solenoids A and B also torque converter clucth. So i will like to know what would you recomend for me to do change the solenoids or swap the tranny out. any input is much appreciated

[@frankmanns9561]

Jon big help big ups thank you

[@InsaneOil]

Thanks for the comment. Good luck with your repair.

[@FearlessSwampKing46]

Thanks Very Very Much Help thanks

[@ARuizFAME23]

I'm still confused? When you flush out the old oil how much of the new oil do you put back just 1 gallon?

[@ThePhoeniix602]

Hey Jon. I recently bought a 98 4.6l f150. It was running perfect until one week later. I started the truck up and put it on reverse and it was still good then put it on Drive and didnt go. I accelerated and still nothing I had to accelerated it even more and went slowly then drove good. Does this everytime I press the brakes and try to go again still have to accelerate a lot for it to move. If I press to much it burns tires and acts like it wants to turn off. Like if you were driving standard. Can you help me out?

[@gmocastillo651]

Very informative video thank you

[@InsaneOil]

Thank you for the comment. Good luck with your repair.

[@edgartrejo4787]

Very detailed thanks

[@InsaneOil]

Thank you for the comment. Good luck with your repair.

[@derrickherberg7036]

will this be the same with a 07' 5.4 Ford F-150? Same spot that the lines are in this video?

[@khalid109q]

Nice and good.

[@javiercn2839]

Thanks a lot for the video. Is it necessary to put some gasket maker (like permatex ultra-grey)?

[@InsaneOil]

According to the repair manual, if the gasket is in good condition, then permatex is not needed. I used no gasket maker and this transmission. I sold this vehicle about a year ago and had no issues for the 10 years I drove it after I did this video.

[@larrymaloney877]

Great video...excellent details...I'm doing a 2003 E150 with 138K. It's never been done says the original owner. Thanks for the demo. Has anyone ever looked at the new filter after the flush to see if additional contaminants are picked up?

[@UncleSarkis]

Did you have any problems after changing your transmission fluid? I hear it's not a good idea to do it after too many miles ever never changing?

[@larrymaloney877]

@@UncleSarkis , no problems. I'm still not understanding why clean fluid might cause problems. My power steering recently failed. That was a bear to change. The "remanufactured" pump had a stuck relief valve so blew out the pressure line on startup. Autozone did reimburse $93.00 for a new line.

[@UncleSarkis]

@@larrymaloney877 two reasons that I hear why...1) since a transmission was not serviced for a very long time, there is a buildup of solid material through passage. The new transmission oil with it's stronger detergents will free up those solids and break them free, clogging or closing up tiny passage ways. 2) clutch material inside the transmission has deteriorated and removing the old oil will cause it to slip, because the lack of lubricity from the clutch material that flowed within the oil provided enough friction to prevent slipping. This is just information I have heard from mechanics I know and KZbin mechanics like Scotty Kilmer too.

[@txpaintball]

So do you need three people to do this job? one to watch the color and one to turn off the vehicle and a third to add the fluid?

[@blunitehawk]

Can I just do the 6 courts or is it recommended to do an entire flush

[@matthewtinker4569]

No dipstick. I did some research and everything keeps saying that i need to take it to a professional. I thought about pumping the fluid through the system but I would not know how to check it to see if it had the correct level. Any suggestions about how to check the level? The plates on the truck looked like Nebraska. I went to school there.

[@ARuizFAME23]

So I should buy three 1 gallons of new transmission oil?

[@AFIFI112109]

Great job!!! Thanks

[@jazieljaiden6502]

I know I'm pretty randomly asking but does anybody know a good site to watch new series online?

[@adamonyx8167]

@Jaziel Jaiden i would suggest flixzone. Just search on google for it :)

[@javiertellez1183]

tengo unatroca 2001 ford f150 v6 prediavien y o rayano arranca aversimepueden ayudar gracias saludos

[@flambeaulizama]

Great video! Thank you!

[@InsaneOil]

Thank you for the comment. I hope it helped with your repair.

[@flambeaulizama]

Still ironing out some kinks. I'll get back with you.

[@flambeaulizama]

I can't find the amsoil. Any other recommends?

[@InsaneOil]

​@@flambeaulizama www.amsoil.com/shop/by-product/transmission-fluid/automatic/signature-series-multi-vehicle-synthetic-automatic-transmission-fluid/?zo=10458

[@matthewtinker4569]

On a 2009 F150 transmission fluid change. I have identified the inlet side of the oil cooler. I am trying to figure out where to add the oil to the transmission. There is a reservoir for the transmission fluid but I can not find the fill tube. Any help? Where are you from?

[@joshgreen9851]

Are you in Southern CA? Lol. If so i would take my truck to you anytime for this. I just bought a 2002 F150 5.4L.

[@jamesk5989]

Can’t believe how good condition that undercarriage is in for a 01

[@InsaneOil]

Vehicle was garaged for the first 10 years before I owned it. This video was also filmed in 2012.

[@dvlwalsh]

Thanks for the video ... I'm guessing mine has also never been changed but I wanted to ask: my F150 is manual...is there anything different I should consider?

[@mannys9130]

David Walsh It's much easier. There's a fill plug and drain plug. You remove the fill plug first (always), then the drain plug. The oil will drain out. The drain plug may be magnetic. If it is, clean all the fuzzy metal shavings off before reinstalling it. Use the exact fluid specified by Ford to refill the transmission. Squeeze/pour new fluid into the fill plug until the fluid inside is level with the bottom of the fill plug hole. Most people just fill it until it starts to overflow, let it drizzle out until it doesn't come out anymore, and then reinstall the fill plug. That's it. MUCH easier than an auto trans fluid change. Words of caution! If Ford calls for ATF like Mercon to be used in your manual transmission, it's not a typo. Many 5 speeds use ATF today. If Ford calls for a gear oil like 75w-90, 80w-90, or 75w-140, you must make sure you use the correct GL rating. Most manual transmissions will call for GL-4 gear oil. Most differentials call for GL-5 in the SAME viscosities. If you use GL-5 in a manual transmission that calls for GL-4 you will DAMAGE it. Most 75w-90 etc gear oils at AutoZone or other stores will be GL-5 and meant for differentials only.

[@fordwindsor351]

that display that shows the cooling lines is odd for me for the smaller cooler in front of the radiator isnt even for the transmission, its for the power steering.

[@murmaider2]

That multipurpose fluid is all well on good on the 4R70W, but never use anything but a Mercon/Dexron only fluid in a 4R100

[@murmaider2]

***** Vehicles that came with the 4R100 specify in the manual that multi-purpose fluids that include a Mercon V specification cannot be used in the transmission due to the friction modifier that the Mercon V specification calls for which causes the clutches to glaze over. The Torque Drive fluid you posted is the only fluid I would use in a 4R100 because it has a Dexron III/Mercon rating without a Mercon V rating. This has been confirmed by a retired Ford engineer that designed the 4R100 over at the ford-trucks.com forum

[@tonymayhew191]

Did you know that if you were to turn the one gallon jug of oil around 180deg from the way you are pouring it in the funnel it won't try to chug the oil out the hole? One of those special designs that I believe most people who are unaware of it would rather not make a mess if it can be avoided!😉

[@InsaneOil]

I was actually aware of that but then the label would not be showing…product placement. 😉

[@meTimetraveler]

also the torque converter acts like a centrfuge, all the dirt in the fluid ends up stuck to the walls of the torque converter

[@jcrewe100]

hi jon i have a f150 2007 5.4 v8 when i put it reverse it takes 4 to 5 sec to go in gear what do u think might cause this thanks

[@romansroad2007]

That’s what I plan to do on My Ford Expedition 4wd 2001 on Tuesday. I just did a Amsoil oil flush and oil filter changed too I was thinking maybe to use the Amsoil transmission fluid on the transmission too. How is it going for you on the transmission of Amsoil fluids compared to Ford transmission fluid ???!

[@InsaneOil]

Runs like a dream. I'm about 6 1/2 years in to this fluid. I sent a sample in to the lab last year and they said the fluid was still good to run. I'll send another sample in this year.

[@noodi5555]

my excursion is on factory oil and it's 110000 miles. should I change it or not because three. mechanics

[@manfredmalachi]

courtney is my girlfriend and i was logged in on her account when i posted that... but yeah i got a newer one from my local junk yard for $20 and my fittings and line was rusted solid so i had to cut and hose clamp them...

[@bethware4266]

We have a truck that were building and need to know how much and what kind of fluid goes in the torque converter?

[@bethware4266]

302 Boss motor

[@yousefergigh8988]

tnx for the video my lariat 2010 transmission are mixed with water should i do the same

[@InsaneOil]

Solve the water problem first.

[@351cleavland]

I have a '96 f150 e4od w/170,xxx miles. Is there any reason I wouldn't want to use the amsoil synthetic after a flush. I have heard that it MAY cause issues because the bands have been soaked in conventional fluid. Truck has been serviced regularly. However, while it is running great, it is old. I need another year or so from it before I invest in a trans rebuild.

[@stephansimon6313]

Following your procedure, would there not still be some old fluid in the oil cooler? you drained the trans, and flushed the TC, but once you hook the line back up to the oil cooler, isn't there going to be new fluid entering the cooler and whatever old fluid left in the cooler and the return line being pushed into the trans?

[@jonothejester]

Good catch. That is one part that I did not clarify. Since the actual oil cooler sits above the send/return lines, when I disconnect the line (and drop the pan), gravity will drain the oil cooler and line. To help this, you can also put some compressed air through the lines...just don't have a very high pressure because you don't want to blow any seals or lines. Hope this helped.

[@hankwilliams8648]

at 11:09 what is that part called just above your index finger with the checkered rough texture with the hole and plug? cuz i do not have that plug and am wondering is tht safe

[@jobvalero2564]

Could all these steps that you used, be used towards a 4.6 liter engine?

[@genxfordguy1380]

Yes, absolutely. My 2000 F-150 has a 4.6 and the same "Metric" transmission.

[@trigder128]

Great he

[@professorspsingh5445]

Good information on the video. I yet have to learn much more here. We have common interests. Can we exchange links?

[@lucaslawnservice]

Thanks for another great video! I was just wondering if you would happen to know why a trans on a 2000 f150 5.4 liter would be making kind of whistling/whining noises in first gear and reverse under normal driving conditions? It doesn't do it all the time, but when it is placed into first gear manually(it's an auto trans) it just has a constant whine. Also, when it is cold cranked in the mornings, it makes a really strange, almost pulsing, whining noise for just a few seconds when it's placed into reverse which seems to come from the 4 wheel drive shifter area in the floor board. I've been told that it could be some kind of pump??? Sorry to make this so long, it just has me totally confused because it is driving absolutely normal. Any input you could offer would be greatly appreciated! Thanks for your time...

[@lucaslawnservice]

Also, the fluid is full and is still red...

[@lucaslawnservice]

***** Thanks for the quick reply. I have owned the truck for the past 40,000 miles and I've never changed it. The truck has 178,000 miles on it but the trans was replaced by the previous owner,or so they said, and so the trans should only have about 100,000 miles on it. Fluid has probably never been changed I'd be willing to bet, so it's probably past due. It says on the dipstick to use Mercon V trans fluid only. Do you think changing the fluid and filter out would help? Is there any trans additive that would be beneficial to add in when the fluid is changed? There is also an added in-line filter on the trans line at the front of the truck near the rad. It looks old as well.

[@lucaslawnservice]

***** Thanks a lot! Will definitely try this soon! Appreciate the links as well. Just out of curiosity, have you ever known of many pumps in these type of trans to go bad? Just curious...

[@lucaslawnservice]

***** Oh, sounds good. Thanks again for your help!