I know the car runs well on 5w-40, but how different is 0w-40? General temp ranges of cold starts are from 40-60 degrees F the mornings of races, usually garage kept.
It's sounding more and more like I should go to this Castrol Edge 0w-40 for $25 and just keep it changed out every 2.5-3k...
Originally Posted By: Rand
What are your oil temps at these events? What kind of cooling system/upgrades do you have?
The only cooling 'upgrades' I have have a new Koyo radiator and Samco silicone hoses. Fresh Subaru coolant. Stock intercooler.
Cooling has never been an issue. I do not have...
I've been a Rotella T6 5w-40 user for the last 5 years. Paired it with a WIX/Napa gold filter with the proper bypass pressure. Car's been a daily driver for 4 of those years, with heavy autocross usage in the last 2-3. Now it's sits in the garage 6 days out of the week. 25-30 events per year...