OIL change prior to 10k?
#16
I think I've had 3 oil changes in the first 10k? Every time the car hit a shop lift and the rear diffuser got dropped for alignment or suspension work - it's a marginal cost to change the oil at that point.
Based on oil consumption rates, you won't make it 10k between oil intervals without adding maybe ~20% (2 quarts) of the overall oil volume back to the engine anyway.
Everyone not doing a used oil analysis (UOA) and just changing on their feels is guessing in my opinion. Once I get out of the opportunistic oil changes I'll just start sending in UOA's and see what interval makes sense. With past engines in lower performance cars (but still tracked a lot), 6000 miles on 4 quarts of oil resulted in clean UOA's (from 120,000 miles lived with the engine, ~40k of which were on the track). I didn't see any loss of power based on telemetry (weight and acceleration maths) but I wasn't correcting for air temperature and wind speeds either. That said, I don't know a spec series that doesn't do rebuilds if they want to have competitive engines.
conclusion? INCONCLUSIVE!
Based on oil consumption rates, you won't make it 10k between oil intervals without adding maybe ~20% (2 quarts) of the overall oil volume back to the engine anyway.
Everyone not doing a used oil analysis (UOA) and just changing on their feels is guessing in my opinion. Once I get out of the opportunistic oil changes I'll just start sending in UOA's and see what interval makes sense. With past engines in lower performance cars (but still tracked a lot), 6000 miles on 4 quarts of oil resulted in clean UOA's (from 120,000 miles lived with the engine, ~40k of which were on the track). I didn't see any loss of power based on telemetry (weight and acceleration maths) but I wasn't correcting for air temperature and wind speeds either. That said, I don't know a spec series that doesn't do rebuilds if they want to have competitive engines.
conclusion? INCONCLUSIVE!
#17
Thanks - you guys convinced me to do it now that I am at 4k. Where (U.S) do you guys buy your parts and oil from as I intend to buy those myself and hand it to the indy shop to do the work.
Thanks in advance.
-Assad
Thanks in advance.
-Assad