How to change the coolant in your JK. DIY Jeep Coolant Flush

In this video I show you how to flush the cooling system on your Jeep and replace the thermostat. I show you how to do this process yourself and save $$$. This particular video will be helpful if you have a Jeep with the 3.8L V6. Is still very similar though if you have the later model Jeep with the 3.6L. This video was not sponsored and all parts paid for by myself. These are not affiliate links, but I wanted to include them to make it easier for you to get what you need if you decide to do this job. Here are some links for what I purchased for this job:
Coolant: Zerex Gold concentrate
www.oreillyauto.com/detail/c/...
Thermostat: Murray part number 65695
www.oreillyauto.com/detail/c/...
Prestone Flush Kit:
www.oreillyauto.com/detail/c/...

[@PNWdays]

Wow I’m a young women who just bought a jeep jk and am going to do this you helped me feel confident in the job I appreciate the well explained video

[@JKJeep]

That’s awesome! Thank you so much for the comment and for watching my video! All the ones I put out I try to be detailed to inspire people to take these jobs on. I know you can do it! Enjoy the new Jeep! I have other DIY maintenance videos planned that may also be helpful to you. Thanks again for watching!

[@PNWdays]

@@JKJeep quick question I believe current coolant in my jeep is mopar do you think it’s fine if after replacing the thermostat I top it off with zerex OAT coolant?, or just completely flush out the old?

[@JKJeep]

@@PNWdays I’m not an expert by any means, but if the coolant is compatible it should be ok. If you are replacing the thermostat and there anyways though, I would recommend flushing the system and putting in all new.

[@PNWdays]

@@JKJeep hey! Update 🎉 I flushed the coolant and purchased an aluminum thermostat off Amazon instead of going through multiple plastic ones for my 3.6L and this video truly saved me $100s. Flushed and burped it within 2 hours. Thank you ever so much. 😊

[@JKJeep]

@@PNWdays Wow that’s awesome, way to go! Glad my video was able to help you do it yourself and save money!

[@hreeves00]

I just bought a JK couple weeks ago and this is my current favorite channel to see upload. Keep up the good stuff!!!

[@JKJeep]

Thank you very much for watching and glad you’re enjoying the videos! I have some content coming up that will probably interest you then, I mentioned it in the video. Spark plugs and wires, diff fluid and transmission fluid. I’m going to try to get them recorded and posted in the next couple weeks if time allows. Thanks again for watching!

[@mikegonzalez9316]

I must give credit were credit is do, Your instructional video was very well illustrated !

[@JKJeep]

Thank you I appreciate that! Thank you for watching!

[@JohnSanders-gx9tf]

Thank you so much for this video! I knew my radiator was overdue for service but I was able to do this in my driveway for a fraction of the cost. Thanks for the detailed instructions and encouragement to get it done.

[@JKJeep]

Absolutely! I’m glad the video helped and you were able to do this yourself and save money! To me that is worth the effort to make these videos. Thank you for watching!

[@allenwilson6615]

Great video! Having to do the good o'le oil filter housing replacement here soon and I'm watching this to see how i can do my thermostat/coolant replacement at the same time. Keep it up boss!

[@JKJeep]

Thank you for watching and for the positive feedback! That housing replacement isn’t a terrible job, don’t blame you for doing thermostat while you’re in the area. Thanks again for watching!

[@jrneedville]

Love your videos very detailed thank you 😊

[@JKJeep]

Thank you! I try to put in the details that I feel some people leave out even if it means a longer video. Thank you for watching!

[@stevejohnson8435]

Thanks for taking the time to make this video! Nice and informative.

[@JKJeep]

Absolutely! Glad you found it helpful, thanks for watching!

[@jacksjeepinchannel5349]

Great video. Very well explained.

[@JKJeep]

Thank you, and thanks for watching!

[@edcroker8163]

Thank you!! It was a project next on my list.

[@JKJeep]

Absolutely! I enjoyed making the video, thank you for watching!

[@charlesaceasarii1797]

Good stuff brotha, thanks for posting.

[@JKJeep]

Thank you and thanks for watching!

[@cerny4444]

Excellent video, thanks!

[@JKJeep]

Thank you! Thanks for watching

[@bhphond2951]

great video, very helpful

[@JKJeep]

Thank you, and thanks for watching!

[@tonjak1141]

Awesome video!

[@JKJeep]

Thank you! Thanks for watching!

[@rickjones4406]

Man on my 2014 Jeep Wrangler Rubicon is a pain to get too. I had to remove my grill to get to it. Was not too bad to get too after that. Good video, Thanks.

[@kha-im4437]

How many gals of antifreeze you to it in ?

[@JKJeep]

Glad you were able to get it done, sorry this video wasn’t as helpful for you due to us having different engines. Thank you for watching!

[@JKJeep]

@@kha-im4437 It took about 1.5 gallons to refill the system. Thanks for watching!

[@kjelly9059]

Nice work. I opted not to fill into the engine block directly and mine took about 20 min to fully purge. A lot messier

[@JKJeep]

Thank you and thanks for watching!

[@alboizms]

Great video. I have a 2013 Jeep wrangler with the 3.6. Is the procedure more or less the same ? I’ve been looking for a good coolant flush video and yours is the best I’ve come across so far 👍

[@JKJeep]

Wow thank you, I really appreciate that! Yes, the overall procedure for flushing and purging the air out is the same. Flushing your heater core will be the same as well. The main difference may be your thermostat placement on the 3.6, but if you follow the upper radiator hose it will take you to the thermostat housing if you are wanting to change that. Thank you for watching!

[@ricwar8100]

Great video, thank you for sharing your detailed knowledge l. I have a 2007 X 3.8, will there a big difference from your 2011 step by step process?

[@JKJeep]

Thank you so much! I have the 3.8 as well so it should be exactly the same. Thanks for watching!

[@user-mn5ps9vq6i]

great video, thanks. I have very hard water where I live so is there a concern with mineral deposits when you flush with the hose? I'm thinking no since you are hopefully flushing the majority of that water out but just thought I would ask.

[@JKJeep]

Thanks for watching! That is a great question, it only takes a couple gallons to flush the system. So in that case if you get spring water or drinking water you could use that to flush the system. It doesn’t have to be pressurized so you could secure a funnel to your heater hose to flush the heater core. Thank you for the question, I’m sure other areas would have that issue as well.

[@vics7961]

That's was a pretty good and informative video. Appreciate your time and effort. I did notice that the fluid you were using was yellow as opposed to the Mopar red/orange that was originally on the system. Did to have any issues using a different type of coolant?

[@JKJeep]

Thank you! I have not had any issues, the coolant I used is a OAT coolant that the manufacturer says is compatible with the OE coolant, so I felt confident using. With doing the complete flush especially changing hasn’t been an issue. But, if I hadn’t done the flush and just needed to added coolant I would air on the side of caution and just get the Mopar coolant. Thank you for watching!

[@chrisjones-sz5jj]

@@JKJeep think that was where I made a mistake. Mixed Prestone Universal green coolant that says it is compatible OAT and HOAT for Jeep with a previous orange coolant I had in there. Cannot get the Jeep to stop running hot and overheating. Think I have to flush the whole system unless it’s a thermostat or water pump issue. This video is a huge help for me not to take this issue to an expensive mechanic

[@JKJeep]

@@chrisjones-sz5jj I’m glad to hear this video was helpful! I hope a flush and thermostat change will get your Jeep running cool again. Thanks for watching!

[@Danielxperez14]

Nice video, for my case I need to change out my heater core, would I need to drain my coolant like in the video or is it not necessary? Thanks

[@JKJeep]

Thank you and thanks for watching! Yes you will have to drain some out to where your heater core can empty. You can do this using the valve at the bottom of the radiator, or just pull a heater core hose and let drain that way. Thanks again for watching.

[@Danielxperez14]

@@JKJeep thanks I did, 👍 great channel!

[@JKJeep]

@@Danielxperez14 thank you! I really appreciate it!

[@ChewyWookie]

Nice video! What model is your headunit?

[@JKJeep]

Thank you! The radio is a Podofo unit off Amazon, I did an install video on it and left a link for it in the description of the installation video. Thank you for watching!

[@ChewyWookie]

@@JKJeep ty!

[@minsookang2304]

nice dude. Is that similar jl 2.0 turbo ???

[@JKJeep]

Thank you and thanks for watching! The process is the same, I’m not sure on thermostat location on the JL though. Hopefully it’s not too bad to get to on that one. Getting all the air out of the cooling system will be the same as well. Best of luck to you!

[@TheCarlyalenz]

What year is your Jeep? I have 2014 Rubicon and I'm thinking of doing all of this tomorrow.

[@JKJeep]

Mine is a 2011 with the 3.8, yours will have the 3.6 so the thermostat will be in a different spot. But the process and how to do it is all still the same. Thank you for watching!

[@robertomorales4989]

What year is this jeep? My heater cores look different and the lower radiator hose is not as easy to get a hold of.

[@JKJeep]

Mine is a 2011 with the 3.8L. Thanks for watching!

[@robertomorales4989]

@@JKJeep ok thanks. That’s why the difference. Mine is a 2014.

[@dyardsale5475]

good

[@JKJeep]

Thank you, thanks for watching!

[@dyardsale5475]

@@JKJeep Top trans cooler line broke right off the radiator. Coolant came out that hole also. Connected both trans lines to each other using the broken off connector piece (bypassing the radiator altogether) and spent a total of 6 hours getting home (20 miles). Made stops every few miles because no trans cooler and no pressure in radiator and fluid leaking out of hole. Drove last 6 miles with hood totally open. Cops helped me with needle nose pliers and kid saw me woking on the side of the road and brought me 2.5 qts of trans fluid at midnight (did not use and will return to him) and a screw clamp which I needed because my 20 year old original clamp broke as I removed it. Ordering brand new radiator and both hoses asap.

[@JKJeep]

@@dyardsale5475 Wow, what an experience that was. Glad some others stopped and helped out. It’s good to hear that there are still good people out there occasionally. Glad you got it home safe where you can fix it up

[@dyardsale5475]

​@@JKJeep Just woke up after 4 hours of sleep. Gathering my thoughts and making to do list. Ordered Denso radiator from Amazon before I slept. Will be writing a letter of accomodation to the two cops and a letter to the kid's parents telling them about their son's character. When the car is up and running will also be returning the 2.5qts of trans fluid the kid gave me. The kid had an interest in cars so I can send him a diagram of the work I did joining the trans lines (by passing the radiator). That's about it. That radiator was leaking years ago, I should have changed it then. Lessons.

[@hoselrocket2001]

$15 for a thermostat? My OE replacement was $55 and I thought I got a decent deal. Not sure what part of China that one must have been sourced from. Ah, I see you have 3.8L....mine is a 3.6L

[@JKJeep]

Yeah I have the 3.8, I got mine at Oreillys but no telling where they source parts. Thanks for watching!

[@dirtdiggler751]

The aftermarket thermostat for my 2016 rubicon was $18 @ O'Reilly. The OEM Mopar from dealer I ended up buying was $63. They are both sourced from China.

[@jmanmarcus]

Are you military sir?

[@JKJeep]

No, I am not in the military