spmcpa wrote:A question preferably for either Blackcat81 or VapingMadMechanic, an item that I have not seen clearly addressed yet in this thread. I have seen suggestions that most or all of the auto trans fluid may be replaced in conjunction with the repairs for the timing chain campaign.
Is that only for the AWD versions of the M56? In other words, if the vehicle is a 2WD M56 is it pretty much a given that the ATF will be changed out? Not at all likely that it will be changed out? Up to the tech's discretion that it will be changed out depending on his preference in executing the repair?
I ask because I sent my 2WD M56 in last week with instructions to perform the TC campaign repair and flush the trans. Mileage is exactly 50,000. The other local Infiniti dealer (now closed) only drained and refilled 3 quarts at the 40,000 mark.
I'm just curious if I should be paying for the auto trans flush (which I'll gladly do if appropriate) or whether it's not really needed because 75% or more of the fluid will be replaced anyways as part of the TC campaign.
Incidentally, this M56 had no engine or transmission driveability issues before being taken in for this service. Hoping it will return that way. Thanks for your input gentlemen.
I ran into this situation with my '12 M56x. Last year, I had a 60,000 mile service performed, and had all of my fluids replaced. Around 400 miles after that, I threw a P0024 exhaust valve timing code error, and luckily I was able to make it to my dealership. At that time, the recall had just been issued, and they went ahead and took me in that day and gave me a new Q70L loaner. According to the FSM, on the AWD models, the front final drive assembly has to be removed, which involves replacing the transmission fluid. If you're going to have the timing chains replaced, I wouldn't have the transmission fluid changed. BTW, the FSM calls for the drain and fill procedure, not flush. I personally wouldn't recommend the flush. I've seen transmissions ruined because of this...just my $0.02.
In a nutshell, I wasted money on the 60K service because most of the cost was fluid changes...bad "timing" LOL