DIY: G37 Automatic Transmission Fluid Change, Pan Drop/Clean
Registered Member
Joined: Jul 2017
Posts: 207
Likes: 4
Hi All, just wanted to post this video by Scotty on the subject of LIFETIME automatic transmission fluids.
https://www.youtube.com/watch?v=RuNNqh8-jkw
https://www.youtube.com/watch?v=RuNNqh8-jkw
Registered Member
Joined: Jul 2017
Posts: 185
Likes: 39
Thanks for this write-up! I just finished the 3x drain and refill, although I should have gotten a 4th gallon. Only wound up pushing about 11qts through, but the car shifts much nicer now, and that fluid was nasty at 66,000 miles. I did use the DIY fluid pump which made the job much easier.
I wanted to post this to help save some other members a little money. The fill adapter can be replaced with this hose barb
Hose barb
in between fills while the car was running for 3 minutes, I used a 3" piece of hose (same hose that the diy fluid pump uses) that was plugged with a bolt to keep fluid from leaking, and then I didn't have to keep swapping the fill plug with the barb. Thanks again for the great write up! Transmissions have always been something I've stayed away from, but this helped me tackle it and save money from the dealership
I wanted to post this to help save some other members a little money. The fill adapter can be replaced with this hose barb
Hose barb
in between fills while the car was running for 3 minutes, I used a 3" piece of hose (same hose that the diy fluid pump uses) that was plugged with a bolt to keep fluid from leaking, and then I didn't have to keep swapping the fill plug with the barb. Thanks again for the great write up! Transmissions have always been something I've stayed away from, but this helped me tackle it and save money from the dealership
Thread Starter
Registered Member
Joined: Jan 2013
Posts: 65
Likes: 48
From: Northern, NJ
Thanks for this write-up! I just finished the 3x drain and refill, although I should have gotten a 4th gallon. Only wound up pushing about 11qts through, but the car shifts much nicer now, and that fluid was nasty at 66,000 miles. I did use the DIY fluid pump which made the job much easier.
I wanted to post this to help save some other members a little money. The fill adapter can be replaced with this hose barb
Hose barb
in between fills while the car was running for 3 minutes, I used a 3" piece of hose (same hose that the diy fluid pump uses) that was plugged with a bolt to keep fluid from leaking, and then I didn't have to keep swapping the fill plug with the barb. Thanks again for the great write up! Transmissions have always been something I've stayed away from, but this helped me tackle it and save money from the dealership
I wanted to post this to help save some other members a little money. The fill adapter can be replaced with this hose barb
Hose barb
in between fills while the car was running for 3 minutes, I used a 3" piece of hose (same hose that the diy fluid pump uses) that was plugged with a bolt to keep fluid from leaking, and then I didn't have to keep swapping the fill plug with the barb. Thanks again for the great write up! Transmissions have always been something I've stayed away from, but this helped me tackle it and save money from the dealership
Registered User
Joined: Nov 2017
Posts: 40
Likes: 1
Just when I thought I was done with engine oil UOAs to determine I want to run Castrol Edge 0w40 going forward, I think I got myself involved into ATF UOAs.
The results have just came in and here is the UOA for the ATF I had drained. Multiplying wear numbers by 5.09 (32000/6282) gives results close to the universal average numbers. There is nothing exciting in the numbers, they are just average. Nevertheless, it will be a good reference point in the future, especially comparing Matic-S to Amsoil Fuel-Efficient ATF.
Here are Matic-S UOA results posted on BITOG by someone else
2005 G35 Nissan Matic S 41k Jatco RE5RO5A Gear & Transmission Used/Virgin Oil Analysis Bob Is The Oil Guy
The results have just came in and here is the UOA for the ATF I had drained. Multiplying wear numbers by 5.09 (32000/6282) gives results close to the universal average numbers. There is nothing exciting in the numbers, they are just average. Nevertheless, it will be a good reference point in the future, especially comparing Matic-S to Amsoil Fuel-Efficient ATF.
Here are Matic-S UOA results posted on BITOG by someone else
2005 G35 Nissan Matic S 41k Jatco RE5RO5A Gear & Transmission Used/Virgin Oil Analysis Bob Is The Oil Guy
Registered Member
Joined: Jul 2017
Posts: 207
Likes: 4
I would go ahead and perform the full 3x drain & fill detailed in the first section of this thread including dropping the pan for a cleaning.
If you don't feel that you or a friend could do this I'd go to a Nissan dealer and have them perform the service, not a flush though, just the service listed in the FSM.
As far as how to get the fluid to the proper level, it's in the first section of this thread.
If you don't feel that you or a friend could do this I'd go to a Nissan dealer and have them perform the service, not a flush though, just the service listed in the FSM.
As far as how to get the fluid to the proper level, it's in the first section of this thread.
Registered Member
Joined: Dec 2014
Posts: 24
Likes: 12
From: Tennessee
Just saw this link with an excel spreadsheet that can calculate the percentage of new fluid in a transmission flush. Helpful to know how much of the old fluid is still in your mix after 3x drain & fill
https://www.bobistheoilguy.com/forum...tial_Drain_CAL
https://www.bobistheoilguy.com/forum...tial_Drain_CAL
Thread Starter
Registered Member
Joined: Jan 2013
Posts: 65
Likes: 48
From: Northern, NJ
Hey Helikido. I did collect Amsoil ATF sample during the last drain and fill, and it had been sitting on the shelf for almost a year. So, I sent it to Blackstone Labs yesterday, after seeing your post a couple of days prior. Let's give it probably until early next week to get the results.