Transmission and Differential Fluid Change | Motul Gear Oil - 2016 2018 Subaru WRX & STI

[@GTRWendy]

I dread that day I have to do mine. It'll cost as much as my exhaust system. :(

[@SpencerHogg]

OMG... That GTR life haha!

[@LousWRX]

Nice video! Definitely not too bad of a job when you have a lift to use. Good stuff as always! My dealerships changed my transmission fluid when they replaced my clutch under warranty, so I got lucky with that. But nice to know it's easy to do on our cars!

[@SpencerHogg]

Nice bro! That's pretty good then!! Yup it's not too bad thankfully!!

[@JesseRizo]

Great video bro like how you showed the whole process and what u used 😎 thanks for the links by the way thumbs up 😎👍👍👍

[@STI_awd]

whats the difference between the gear 300 and just the gear oil if their both 75w90. they both say for transition and diff on the bottle

[@matthewdoan8206]

synthetic and non synthetic im sure you figured it out 3 years ago tho lol

[@883jpb]

Always crack the fill bolt first

[@ChaseMyles]

Dude, when I changed the diff fluid on my 07 STi, it came out as black sludge. The previous owner NEVER changed the oil. Made a huge difference in feel for sure, combined with the transmission fluid change the car felt much smoother.

[@SpencerHogg]

Ma dude!

[@sonofi0re]

I’m always on time bro ! 🔥🔥

[@SpencerHogg]

Ma dude!!! What time is it there in Franco bro?

[@sonofi0re]

NinjaxBart It’s 7:32 PM ! 🔥

[@dno440]

isn't the Front diff supposed to have the NS version of the 75/90w NS ?

[@Avantii7]

Brasso nissan by mcleod and heritage drive? Bruh that’s where i got my sti 🤯🤯🤯 sick vid btw. Is this the first time you did your tranny and diff fluids?

[@LandoWRX]

Where you get those Torque specs at? LasthumansGarage tightened the trans plug to 52ft Lb... 18 seems kinda weak

[@Copedawg_340]

Nice, I have to do mine coming up soon! Pretty sure i'll be seeing some shavings in mine since I autox often.

[@SpencerHogg]

It's pretty easy man! I didn't have too bad shavings, I mean I had a bit, but not as bad as I saw in some other videos online even!!

[@robvanhalen9696]

Probably not a bad thing to change the transmission oil early, but if you want to stick with the Subaru schedule, it actually says 100k kms.

[@tiagocapitao7286]

one day i gonna have my subaru wrs sti and i go see you make a group of subaru yayyayayayayay.

[@SpencerHogg]

Hell yeah dude!

[@NN13K0]

Great video! Thanks for making it!

[@cot998]

Sti not the same

[@MumbleVlogs]

I need to do this to my car pretty soon, good video bro

[@andrewthomson9854]

Just did my Trans and rear diff. I was @ 45k "miles" Put in Amsoil gear oil. So quiet!

[@SpencerHogg]

Nice!!

[@namelesssd]

So quiet? Was it loud before?

[@lifeisgood070]

@@namelesssd I find the diffs have a little bit of noise to them even new. Amsoil severe gear does quiet it down. Think redline does too. Sometimes the Subaru fluid is on the thinner side of the viscosity index to help with mpgs.

[@hazelnchacha]

Hey guys, didn't realize there was a difference between gear oils for trans and diff. I have 5QT's of the non-300 oil, can the rear diff run that? Or will it cause problems? Also is the Teflon tape on the diff fill plug really necessary?

[@ebwonstia]

Nice video man!!! You covered basically everything. Do you mind putting the link of the funnel you used?

[@d2theyip]

Did you ever get an answer? Trying to avoid taking off the inter-cooler :-/

[@rgp205]

@@d2theyip any funnel with a flexible tube attached

[@vavo4902]

Nice. I did mine last summer, but with OEM fluid.

[@SpencerHogg]

Nice!!

[@antdo]

Motul is the best!

[@ahmedmostafanagiel-sayedmo2273]

thank you for the information

[@kartikav4834]

How was your experience with motul..? Is it worth the money...?

[@vermontvermont9292]

Do you fluid film undercoat the car since you're in Canada ?

[@jjohnnyqquest7900]

Fuckn 2015 cvt wrx front diff and transmission has no dip stick. It’s an air breather for Christ sakes !!! Un RENIFLARD !!! Like we say here in Quebec, Montreal. You are lucky 🍀

[@KingFrenchy11]

Did you guys ever get or heard of the front differential fluid leaking when swapping the coilovers on either side of the axles? When I changed my driver side after putting everything back together on my passenger side, the middle of the car where the transmission sits starting leaking.... did I pop something out of place?

[@stevensandoval729]

Denis Bigand yes, same just happened to me

[@VentureOnMedia]

Hey Spencer, I know this video is a year old but do you still recommend this oil for both diffs? I am about to do mine and wanna get something good for my car

[@SpencerHogg]

Yeah bro It's been running great and very smooth on this gear oil!!!

[@kevinbrown6037]

On the rear diff fill plug did you put something on the threads before you torque it looks white?

[@sivonparansun]

It looks so easy

[@erzramirez3351]

question guys so only takes one bottle each ?

[@aredd92]

The 2015+ WRX manual calls for a 75w-80 oil labeled as Subaru extra mt (SOA748V0100), this is the factory fill fluid. To make a long story short, you should use the Subaru extra mt fluid or an equivalent gl5 rated 75w-80 because these fluids contain unique additives that 1: don't prematurely wear or degrade synchros, and 2: meet the extreme pressure and temperature requirements (gl5) of the front diff (hypoid gears), and 3: are less viscous in colder and normal operating temps allowing for better shifting, drivability, as well as fuel economy. Unfortunately Subaru only sells this stuff in 5 gal pales for like $400+, which is simply ridiculous on Subarus part. If you can get the parts department to sell you what you need that would be preferable, My dealer would not. And the pickings for an alternative with similar viscosities are very slim.

[@SpencerHogg]

If you go to any performance / third party garage to have this work done, this Motul stuff is what they would use.

[@aredd92]

Yes, a lot of people use Motul fluids like motul 300 and they’re decent fluids. But it doesn’t change the fact that the transmission was engineered and filled at the factory with a gl5 rated 75w80. It would be better to use motylgear 75w80 if anything, though the viscosity still isnt very similar to extra mt, but it’s probably close enough.

[@SpencerHogg]

@@aredd92 Eh, I'm reaching 150,000km's on my WRX at this point, due for another Trans + Diff. Fluid Change and I'll be using the same Motul stuff in this video (Same I've always used in the past 3 Subaru's I've owned, GC8 STI, GR STI, etc.) 75W90 works great in the -40*C cold climate and winters we have here.

[@aredd92]

The Sti has always used a 75w90. The 15+ wrx uses a gl5 75w80. I’m simply stating this for people considering changing their fluid in the near future. It states in the manual that drivability may be affected if you use a 75w90. Perhaps try the motylgear 75w80 on your next change and post if you notice any difference.

[@devinsplaylist7]

Aaron Redd I’m glad you mentioned this. I changed from the factory fill extra MT and switched to motul 75w90 and noticed a pretty big down grade in drivability. Now my trans doesn’t want to go into gear when it is cold.

[@machidaman]

My 1998 Sti RA looks better underneath than that does. What on earth are they putting on the roads ove there? 😳

[@SpencerHogg]

Salts. Lots of salt. and 6 to 8 months of snow, deep snow, and -40* Celsius weather all Winter long. Sadly... Mostly just dirt though, I was alot underneath but this video I had to obviously drive to the shop so it got covered in slush/mud. Not as bad as it looks haha.

[@VinnyMartello]

My wife has a 2015 WRX. I was surprised to see gear oil for the automatic trans. But then again these newfangled CVT’s are a hair different than my pile of old GM clutch-spinners am I right?

[@VinnyMartello]

I would like to amend that last comment. I honestly have no experience with CVTs so apparently they have CVT fluid these days. I’m so used to working on shit from the 70s haha.

[@subarujaygarcia8390]

So both are the same oil? Or what's the difference

[@grassrootsunlimited3683]

Thank you for the crush washer p/n and torque spec's

[@MrSweetlue]

Did you check the car with running?

[@wintersportlife]

Very good video.. is that WRX or WRX STI ? My 2015 wrx sti has a sensor on rear differential. I’m having difficulty to find the fill bolt on my transmission.. please help

[@gtrsean83]

waicyuen the sensor is the fill plug.

[@Ghettofireman80]

the 2017 sti doesn't have the transmission dip stick

[@tn7778]

did you replace the drain plug gasket? is there an ID on it?

[@misztal2112]

I don't understand why they charge so much to do this at the dealership. It's no different than a regular oil change.

[@jimpie231]

Savage Grace ......that’s because they are trans. Places......trans.oil changes on many JDM (Japanese cars) are easier than an oil change....but those places still change $75 to $150 for the service. Find a local mechanic and check prices. If you want factory (oem) fluids buy them and supply to the mechanic.... also find a local WRX OR WHATEVER CAR Club, join and they will help you.....Jim PS.....rear ends are the same. I have always changed my own oil, trans oil, diff oil for the last 60+ years on every kind of car you can imagine, including domestics. Now my grandson does it for me, I taught him well.

[@tom24gr46]

In the service manual that I have it said 38 lb/ft for the transmission drain (with the black metal washer). Is that correct or was the 18 in the video incorrect?

[@fobmsg]

Thomas Zoumboulias 38/ft is correct 18cant be true

[@dmo.amgc633]

Good video post

[@ricardosydney7124]

Why not using same oil on both side mate? Expensive one on back :) cheap oil frount

[@SpencerHogg]

Hakki Takti The oil is specific to the gears you just use this type of oil

[@MrNiceGuyGTL]

So you need a total of 5 bottles for a full transmission maintenance?

[@SpencerHogg]

3 front, 2 rear

[@miguelrosado6665]

How much trannyflude take on 2015 wrx automatic

[@goinbananas1054]

Struggling to remove a bolt at 38lbs with a 5 foot breaker bar lol, im just playin there's no way that was only 38lbs

[@SpencerHogg]

hahaha

[@xhide00]

Hi, so did you just changed the gasket in front transmission and not on the rear differential?

[@SpencerHogg]

There is not gasket on the rear! :)

[@andytommykeddy3224]

Would a wrx be a good beginner car?

[@SpencerHogg]

I would say so, yes! :)

[@BiologistRyan]

good beginner car for.... what?

[@jameskocks4734]

"my beginner car" was a '87 Camaro IROC Z-28. it was an automatic my first love was my 2001 bullitt mustang. i still miss it.

[@Vissionary1]

No.

[@philliesphan312]

Beginning to lose your virginity!

[@mikemekhjian971]

Why you are using motul motyl gear for thr transmission and not motul 300

[@SpencerHogg]

Different oil is required for the front and rear! Make sure you use the right one!! (Check video description for more info!)

[@ricardosydney7124]

Yeah I am also confused because usually people put same oil on both side

[@ultraman1017]

do we FA20DIT 6MT have a transfer case oil to change?

[@BiologistRyan]

nope the front transmission housing also contains the front differential.

[@robingupta23]

Does anyone know how to determine if you need gear/differential oil change in wrx (besides mileage)? Also, is it damanging to your car if you go over few thousand miles over?

[@SpencerHogg]

Nah it won't do any damage if you go over a few thousand miles. If it's to the point it's become BAD BAD you'd know, you'd feel it and potentially even hear it. It won't blow up or damage anything though, it's REALLY hard to get to that point of it being bad. Like 100k+ kms.

[@ivandeeterrible8037]

How much does subaru charge for this?

[@SpencerHogg]

Lots $$$ hahaha

[@VIXREX]

Doing this without a lift would be a pain. NOT looking forward to this . Good tutorial bruh

[@SpencerHogg]

Thanks bro!

[@jimpie231]

I did mine on a couple of old 6x6” post that I drove the car (Mustang) on......gave me enough clearance to do the rear diff., mine was a stick, I used Mobil1 (car was a Honda) because the trans. Was a little sticky, and this worked well.....similar thickness to Honda fluid for the trans. He never said whether this was a stick? Thanks Jim PS.....make sure you do this on a level or close area.

[@mendez_guzman9661]

Dude🤦🏽‍♂️. Where is the full plug for the front

[@shawn082092]

U need to fill from the dip stick hole. Funnel it with a hose from the top

[@karamirez92]

When both the diff and trans fill and start dripping, do you wait for it to stop dripping or do you put the plug back in as it drips?

[@SpencerHogg]

Let it drip for a while! Maybe10 mins give it then good to go

[@tiagocapitao7286]

i live beside canada wonderland

[@SpencerHogg]

Nice!!

[@Baltimoreborn]

Motul or no tul 😊🤷🏼‍♂️🤦‍♂️

[@tn7778]

should I do this at 40k miles on my wrx 2016? daily driven.

[@SpencerHogg]

Yes totally man good time to do it 100%

[@ToxicityAssured]

Boo! STI is different enough that this tutorial could cause problems. You are missing the sensors, extra drain plug and different fluid capacities. Would you feel bad if someone damaged their STI due to you wanting more views? It should be a WRX specific video. If only for a WRX, this would be a good tutorial.

[@opmike343]

Underside of that car looks 20 years old, Jesus Christ.

[@SpencerHogg]

Average amount of surface grim and slight rust from 3 years in Canadian winters with salted roads. Pretty normal!

[@2FittedBW]

First!

[@SpencerHogg]

Yooo dude!

[@yashar1991]

That's not a sti it's a wrx with wing lol

[@SpencerHogg]

Actually it's a BRZ

[@yashar1991]

NinjaxBart you had wrx sti on your title before, now you changed it to wrx & sti. The procedure for the sti is slightly different, so it might confuse some people.

[@SpencerHogg]

It's the same procedure.

[@gen3v8]

Two bolts on my Sti box T70 and a normal hex bolt