DIY: G37 Automatic Transmission Fluid Change, Pan Drop/Clean
#256
CTA Tools 7425 ATF Filler Adapter for Infiniti 7 Speed
Hi all,
I've been following this thread for a few years now. I finally worked up the courage to perform the ATF change and was surprised at how straight forward it was. Mind you, I didn't drop the pan after reading what happened to Dan G37. Also, my car only has about 70,000 kms (44,000 miles) on it so I don't think it's a big deal (the fluid that I extracted wasn't THAT bad!).
I don't know why everyone is still using makeshift adapters for the filler. I bought the proper tool on Amazon for about $20 and it worked like a charm:
Hope this helps!
I've been following this thread for a few years now. I finally worked up the courage to perform the ATF change and was surprised at how straight forward it was. Mind you, I didn't drop the pan after reading what happened to Dan G37. Also, my car only has about 70,000 kms (44,000 miles) on it so I don't think it's a big deal (the fluid that I extracted wasn't THAT bad!).
I don't know why everyone is still using makeshift adapters for the filler. I bought the proper tool on Amazon for about $20 and it worked like a charm:
Hope this helps!
#259
Registered Member
so im considering doing this myself...looked at an old recepit from dealer when car had 60k, now at 110k, and they did an trans service and only replaced 4 quarts, so guessing they only drained once and that was it...so i planned to do the 3x drain, but looking at cost of a quart of nissan tranny oil and if i get 4-5 quarts x3 ay 13 $ a quart...im thinking the dealer flush at nissan for 180 sounds decent...i asked a nissan tech and he said they hooked it up via lines etc so anybodymhad their trans done at dealer.
#260
Super Moderator
iTrader: (3)
so im considering doing this myself...looked at an old recepit from dealer when car had 60k, now at 110k, and they did an trans service and only replaced 4 quarts, so guessing they only drained once and that was it...so i planned to do the 3x drain, but looking at cost of a quart of nissan tranny oil and if i get 4-5 quarts x3 ay 13 $ a quart...im thinking the dealer flush at nissan for 180 sounds decent...i asked a nissan tech and he said they hooked it up via lines etc so anybodymhad their trans done at dealer.
Most dealers wont do a drain and fill because it can require a couple of hours of actual work to do and a flush only takes 15-20 minutes but either way they can only charge about the same....The old receipt you saw probably didn't involve the shop doing an actual drain and fill...its more likely they just did a flush...i know where i live in theres probably 6 or 7 Infiniti dealerships around and I haven't found one where they were willing to do even a 1x drain and fill ...only flushes
The drain and fill is preferred because the pressure from the flush is known to cause problems including slipping on many many cars especially if previous fluid changes haven't been done often enough...
IMO the flush is never a good idea anyways ...hence the value of this DIY... Independent shops will do the drain and fill but rates vary...where I'm at the cost of a 1x drain and fill at an independent is about the same as a deanship flush as far as I have been able to tell.
#261
Registered Member
Thanks and yeah, I read about the potentials on the flush, though the Nissan dealer stated that going via the coolant lines is not a detrimental process....the reason I was dubious on my previous infiniti trans service is that the receipt only showed 4 quarts and a flush would get more than that correct? Either way thanks for info, I'm just considering them do it and flush, as if indeed that was a flush back then, it really seemed to help car at time etc....
#262
Registered Member
Dealers at most of Infiniti dealerships are complete douchebags, I use to own G35 5AT sedan and I replaced that transmission filter myself, no big deal. That why they called stealerships,lol!
#263
So Ive decided it's definitely time to service the Q40 trans now at 75k I've read the diy and really dont have the time nor do I want to take the chance of screwing it up. The issue I've had is the dealerships won't touch it..A while back I took it the local Infiniti dealership and was told flat out no.. so pissed I left and drove to the Nissan dealership only to be told the same thing by the service mgr "it's not recommended so we're aren't going to do it" wth? I called around to some local import shops and was told to just drain it, measure what comes out, replace exact amount and drive for a week or so and repeat 3 times. they said no real need to measure temp if done this way. just make sure to put same amount back in. One of them I talked to also recommended adding some ”lubegard red" Any thoughts? Can I just drain the pan and add back the same amount? Will this work?
Last edited by Atl3128; 04-05-2019 at 03:20 AM.
#264
Registered User
Listen to the indies. Put back exactly what you take out should work fine. Screw the dealers. I would even save a sample of the black fluid (and it will be black) in a small bottle, take in it and ask about it again then "accidently" knock it over on their desk... Never heard of lubegard red.
#265
Registered Member
So Ive decided it's definitely time to service the Q40 trans now at 75k I've read the diy and really dont have the time nor do I want to take the chance of screwing it up. The issue I've had is the dealerships won't touch it..A while back I took it the local Infiniti dealership and was told flat out no.. so pissed I left and drove to the Nissan dealership only to be told the same thing by the service mgr "it's not recommended so we're aren't going to do it" wth? I called around to some local import shops and was told to just drain it, measure what comes out, replace exact amount and drive for a week or so and repeat 3 times. they said no real need to measure temp if done this way. just make sure to put same amount back in. One of them I talked to also recommended adding some ”lubegard red" Any thoughts? Can I just drain the pan and add back the same amount? Will this work?
#267
I Finally got around to changing the trans fluid today (75k) it was super simple the fluid was very dark brown almost black but didn't smell burned really at all. I have to say this diy was super helpful and saved me $$$ which is always good!!
Basically all I did was jack her up and drain the fluid (5.5qt) into a pre measured paint bucket and put exactly the same measured amount in a clean bucket and pumped it back into through the fill hole. I used the Harbor freight style pump with a smaller hose inside the main hose and a small airpump attachment cut to fit perfectly in the fill hole once full I warmed it up to 100° and opened the fill hole and drained until it dripped. I didn't have time to do more than 1x drain and fill definitely planning to do 2x drain and fill at the next oil change!
Basically all I did was jack her up and drain the fluid (5.5qt) into a pre measured paint bucket and put exactly the same measured amount in a clean bucket and pumped it back into through the fill hole. I used the Harbor freight style pump with a smaller hose inside the main hose and a small airpump attachment cut to fit perfectly in the fill hole once full I warmed it up to 100° and opened the fill hole and drained until it dripped. I didn't have time to do more than 1x drain and fill definitely planning to do 2x drain and fill at the next oil change!
#268
Movin On!
iTrader: (13)
The factory gasket is high quality, no need to use any RTV unless it was over-torqued or was subjected to overheating (if that was the case I'd just get a new factory gasket and not resort to RTV there). Mine came off easily and was in great shape at 75k miles, I'd expect most would follow suit.
#269
Movin On!
iTrader: (13)
I Finally got around to changing the trans fluid today (75k) it was super simple the fluid was very dark brown almost black but didn't smell burned really at all. I have to say this diy was super helpful and saved me $$$ which is always good!!
Basically all I did was jack her up and drain the fluid (5.5qt) into a pre measured paint bucket and put exactly the same measured amount in a clean bucket and pumped it back into through the fill hole. I used the Harbor freight style pump with a smaller hose inside the main hose and a small airpump attachment cut to fit perfectly in the fill hole once full I warmed it up to 100° and opened the fill hole and drained until it dripped. I didn't have time to do more than 1x drain and fill definitely planning to do 2x drain and fill at the next oil change!
Basically all I did was jack her up and drain the fluid (5.5qt) into a pre measured paint bucket and put exactly the same measured amount in a clean bucket and pumped it back into through the fill hole. I used the Harbor freight style pump with a smaller hose inside the main hose and a small airpump attachment cut to fit perfectly in the fill hole once full I warmed it up to 100° and opened the fill hole and drained until it dripped. I didn't have time to do more than 1x drain and fill definitely planning to do 2x drain and fill at the next oil change!
#270
Thanks! Yes I'm definitely going to drop the pan next time I didn't have the time to do it this time and wasn't prepared for the fluid to be that dirty. Even with only partially changing the fluid I can tell the difference in the way it shifts