My '08 G35X went in service April 2008 - at four years I had my indy change all fluids - tranny flush (yes, machine and 12 qts - I know the debate vs. drain and re-fill), and coolant, front and rear diffs and transfer case fluid changes - using Matic S for the tranny, Matic D for the transfer case and Mobil 1 gear oil for the diffs as well as Nissan long life blue coolant. I'd like another 8 years as the car is so nice and trouble free, I am planning on repeating these fluids each 4 years (4, 8 and 12). So I'm scheduling the 8 year and I'm also having the mechanic replace the plugs with OEM at this halfway point with the idea that should be it for plugs for life of the car for me. Brakes and cabin/engine filters are done. Drive belt and PSF were changed at 60k and I'll repeat that at 120k. The car averages about 10k miles per year so I'm a bit over 80k and would like to get 16 years,160k.

Anything else? I heard about throttle body cleaning, mass air sensor cleaning but neither have been done, and the car has all original hoses. Any suggestions on these or other ideas for 8 more smooth years of driving? Thanks.

 

When you say brakes are you referring to the brake fluid as well? Does PSF mean your power steering fluid?

I wouldn't mess with the throttle body if you're not having any issues. Once you start finger banging the butterfly valve there is a chance your idle gets jacked up, it could break, or you spend three hours trying to get the idle back (ask how I know).

You can clean the MAF buy some MAF specific cleaner for electric parts. I usually spray it and let it air dry out. I believe a torx bit is required to unscrew it.

I replaced my hoses with silicone from Z1 motor sports. Check all your bushings as well as suspension/steering components.

When you have your plugs changed make sure there is no oil leaking.

My car hit 10 years last month and I have about 156K miles on it.