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rice_classic · 11-06-2020, 01:59 PM

I have an oil cooler and I race with valvoline full syn high mileage oil. 5w-30. I’ll change out to a 10w-40 if it’s going to be super hot that weekend and I’ll be drafting a lot. HM oils tend to have more zinc and I don’t think expensive boutique oils are necessary. A good syn gets you there, just make sure to keep oil pressure up.

For endurance racing I’ll likely go thicker. The TAPG team that did the 25 hours of Thunderhill I believe used a 50wt oil for the sake of reliability.

11-06-2020, 01:59 PM	#8
rice_classic Senior Member Join Date: Jun 2012 Drives: Nevermorange FRS Location: Seattle, WA Posts: 4,160 Thanks: 755 Thanked 4,200 Times in 1,803 Posts Mentioned: 77 Post(s) Tagged: 1 Thread(s)	I have an oil cooler and I race with valvoline full syn high mileage oil. 5w-30. I’ll change out to a 10w-40 if it’s going to be super hot that weekend and I’ll be drafting a lot. HM oils tend to have more zinc and I don’t think expensive boutique oils are necessary. A good syn gets you there, just make sure to keep oil pressure up. For endurance racing I’ll likely go thicker. The TAPG team that did the 25 hours of Thunderhill I believe used a 50wt oil for the sake of reliability. __________________ SCCA T4 - FRS