Thank you for the info. Since the car is pretty much new Ill check the fluids get an alignment and inspection. As I get acclimated to the car in time then do other fluid changes and upgrades. Also I think driver mod is the first priority.
Love it @gcmak! This ? has worked well for me over the years. The only difference being I'll rely on the BMW computer now to tell me the oil color is changing from amber to brown/black, lol.
Hi there, dont meant to revive an old thread but would you mind telling me what the OEM viscosity is for the diff oil? Thanks!
Here's my latest Blackstone Oil Analysis report.
On this oil I have gone to 4 HPDE events (1 event over 100F, others were pretty cool 60-70F). I don't daily the car; the miles are to/from events and backroads.
This is the GR 0w20 oil - this sample was collected on my 2nd ToyotaCare service.
My car did not burn any oil as indicated by the infotainment during this interval.
Transmission and diff...probably would do it annually. I did my diff once already with Motul gear oil (OEM viscosity).
Brake fluid is Castrol SRF - held up fine for 3 events so far - haven't found a need to bleed.
The tracks my car has seen are Sonoma (PB 1:53) and Laguna (PB 1:41) if it helps for perspective on use.
Overall car's been darn good on track. Even at 100F day oil temps peaked ~254F, which is totally fine. The viscosity of the oil tested gives me good confidence in the oil and the car's cooling system for my needs.
75w-80
Bryan, is this what you're using for diff fluid or are you using something aftermarket?
I actually haven't changed mine yet. ?
Fair enough ?. I'm probably going to do a full fluid flush after LRP on the 12th. I just hit 30K on the Odometer.
9k miles and 22 track days. I am pretty much long overdue. Oops. Maybe I will do it this week before the 12th.
