Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Looks like oil starvation issue in the right handers solved

Ohio Enthusiast · 11-13-2023, 09:09 AM

Comment says 1 liter overfill. @900BRZ tried overfill (IIRC 1 quart, which is almost the same) and that didn't help much.

Before declaring the problem solved I would say we'd want to see a before and after comparison of oil pressure that shows the pressure drop without the overfill and doesn't have it anymore with the overfill.
It might be that in Laguna Seca conditions aren't right for the pressure drop people see on other tracks. Or something in the way he drives. Or his oil pressure gauge is different (as it barely shows any fluctuations not related to RPM which seems unreasonable).
He's also running SX2 tires (in 245/40R17) with fairly low camber (-2.3F/-1.5R) which might not generate enough lateral G's for the pressure drop to occur.

11-13-2023, 09:09 AM	#2
Ohio Enthusiast Senior Member Join Date: Apr 2020 Drives: 2018 BRZ Location: Dayton, OH Posts: 1,047 Thanks: 1,479 Thanked 879 Times in 508 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	Comment says 1 liter overfill. @900BRZ tried overfill (IIRC 1 quart, which is almost the same) and that didn't help much. Before declaring the problem solved I would say we'd want to see a before and after comparison of oil pressure that shows the pressure drop without the overfill and doesn't have it anymore with the overfill. It might be that in Laguna Seca conditions aren't right for the pressure drop people see on other tracks. Or something in the way he drives. Or his oil pressure gauge is different (as it barely shows any fluctuations not related to RPM which seems unreasonable). He's also running SX2 tires (in 245/40R17) with fairly low camber (-2.3F/-1.5R) which might not generate enough lateral G's for the pressure drop to occur.