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Oil weight for track only car with a lot of cooling?
My BRZ is track only and engine oil temps rarely top 235, even in the summer. It just has a lot of cooling.
Factory oil is 0w-20. I'm running 300V X-40 (cold number varies based on what's available but I'm not real concerned about the cold number since it's track only and doesn't see significant time while cold).
Should I drop down to a 20 weight oil? or just a 30 weight? I think I'd like to run Mobil 1 extended performance (basically the regular synthetics with more additives).
I change the oil every 800-1000 miles (roughly, 10 hours).
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2014 BRZ: WRL Build (GP2) MCS, AP, Motec, race wiring harness, blah blah blah
2014 FRS: Similar WRL Build. Back up / parts / practice race car.
2013 Viper GTS : Tractive Coilovers, ACR sway bars, aero, carbon, exhaust, etc.
1999 NB Spec Miata: 1.8 w/ all the goodies.
2022 CT5 Blackwing: Stock.
Last edited by GrandSport; 11-20-2023 at 07:16 PM.
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