Need advice please

bvl

Schedule 1 or 2 maintenance do not mention some fluids at all such as manual tranny and differential. That is only under premium schedule, which you do not *have* to follow. That may be why there's been a few snarky remarks

I agree with the suggestions that as a new owner of a used car, drop the fluids as its an easy thing to do and you know what is going in there.

At 37K, oil and diff, if its 4y old do coolant as well. Brake fluid is up to you, its not mentioned at all in the SMG, some people do it every 2, others every 4, other almost never.

Me personally, I use Nissan MTL (75/85, not 90), Redline in the diff, and a full synthetic. A UOA won't be much use on this drop as you don't know what it is. Its more useful for trending so if you like, start with your next oil change and sample it.

If you are changing every 3750 as per sched 1 I would not bother with a UOA its far to short a life to give you meaningful data on extended OCIs on a street car. I follow sched 2 and run my oil 6mo/7500 miles (which is still a waste with a good synthetic but its under warranty still).

And finally, welcome.

- b