Proper interval to change atf for 7-speed auto
#16
Kinda, sorta. See this:
https://www.myg37.com/forums/2927203-post6.html
It's possible, just not an easy process.
https://www.myg37.com/forums/2927203-post6.html
It's possible, just not an easy process.
#18
#20
Registered User
iTrader: (1)
Nothing is really "lifetime" IMO. I'd change it at 60k intervals. I've seen some Euro trannies that had "lifetime" fluid, some owners that picked those cars up second hand (say 50-75k miles) changed out the fluid almost immediately, showed the comparisons to the new fluid and it was amazing.
Planned obsolescence...
Planned obsolescence...
#21
Nothing is really "lifetime" IMO. I'd change it at 60k intervals. I've seen some Euro trannies that had "lifetime" fluid, some owners that picked those cars up second hand (say 50-75k miles) changed out the fluid almost immediately, showed the comparisons to the new fluid and it was amazing.
Planned obsolescence...
Planned obsolescence...
#23
It's like with medicine - the first rule is do no harm.
Unnecessary intervention only increases the chances of damaging something in the process of "fixing" it.
If Nissan says the fluid shouldn't be changed, I wouldn't change it.
Unnecessary intervention only increases the chances of damaging something in the process of "fixing" it.
If Nissan says the fluid shouldn't be changed, I wouldn't change it.
#24
Administrator
Transmission fluid replacement is more of a method dealerships use to earn more money at every service. If Nissan wanted you changing that fluid very often they would've fitted it with a drain plug
#27
#28
I went to the dealer and spoke with the chief tech guy. He recommended replacing the ATF, rear diff fluid and power steering fluid every 60,000KM (37,500 miles). And he said they always flush the trans with a special apparatus to remove most of the old ATF before filling it with new fluid. I followed his recommendation and changed all three fluids.
I did mention to him that the manual does not recommend replacing the ATF for the 7AT anywhere in the manual. He said theoretically that's what Infiniti suggests. But given the road conditions in China, he thinks it's best to follow a more conservative maintenance schedule.
I did mention to him that the manual does not recommend replacing the ATF for the 7AT anywhere in the manual. He said theoretically that's what Infiniti suggests. But given the road conditions in China, he thinks it's best to follow a more conservative maintenance schedule.
#29
Registered User
This is an interesting thread. I am approaching 35k miles and am wondering if i should go and get these fluids changed?? I have an odd feeling that a stealership will charge an arm and a leg though to change them. I guess it would be cheaper to get this done though, than to replace any mechanical part in this car.
#30
Registered User
FWIW, when I bought my '07 X with 43k miles, I had the fluid changed within the first month since the transmission kept slamming gears on both up-shifts and downshifts between the first 3 gears. Now I, obviously, don't know what kind of trauma it faced before I bought it but the fluid change made gear changes infinitely smoother. Now with 59,xxx miles, shifts are still super smooth. I'm no engineer and I'm certainly no subject matter expert on the differences between the 5AT and 7AT but lubricants degrade, plain and simple. There's not a doubt in my mind that most of us would find metal shavings mixed in with our current transmission fluid and despite there being no recommended service interval for a fluid change, I'd rather not have metal particles causing even more wear on my transmission's internals.
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Jacobg37x (02-22-2020)