I got the car last year and started doing track days this year. US manual recommends 0W20 and manual for other countries also recommends 0W20 but mentions 5W30 as being acceptable viscosity. I have been running 5W30 mobil1 extended performance and wasn't very aggressive. As I progressed, today the oil temperature approximately reached 250°F with ambient temperature of 76°F. I am changing oil and thinking which viscosity or oil to get. I started looking on mobil1 website and found these numbers
EP=Extended performance
FS=full saps (Euro formula)
After seeing above numbers I realized 5W30 EP might not have been enough protection for my needs.
From posts here, seems like 0W40 is favored by many. I am not sure if it fits my needs or I need to look at other performance brands. The car doesn't see much more miles outside track, may be 1-2
Engine oil | Kinematic Viscosity @ 40C | Kinematic Viscosity @ 100C |
Mobil1 EP 0W-20 | 44.6 | 8.8 |
Mobil1 EP 5W-30 | 58.7 | 10.15 |
Mobil1 FS 5W-30 | 71.8 | 12.2 |
Mobil1 FS 5W-40 | 81 | 13.2 |
Mobil1 FS 0W-40 | 78.3 | 13.8 |
EP=Extended performance
FS=full saps (Euro formula)
After seeing above numbers I realized 5W30 EP might not have been enough protection for my needs.
From posts here, seems like 0W40 is favored by many. I am not sure if it fits my needs or I need to look at other performance brands. The car doesn't see much more miles outside track, may be 1-2
Last edited: