Quote:
Originally Posted by PuslarBrrrz
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From the linked video:
Quote:
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"OK, so we've already established the fact that if you track this car, stock, with or without forced induction, you need an oil cooler on the car, there's no way around it."
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Stating the same thing again and again does not establish it as a fact.
I have yet to see any evidence or analysis suggesting that an oil cooler is
required for tracking these cars. If it's out there, somebody provide a link with more substantial evidence than the same old "you must have an oil cooler" mantra repeated ad infinitum.
http://garage.grumpysperformance.com...iscosity.1334/
According to this source,
at 220°F 0w20 viscosity is ~8 cSt, figure that is what the engine tolerances are designed for.
At
270°F:
0w20 viscosity has dropped to ~
4 cSt,
Xw30 ~5-5.5 cSt,
Xw40 ~6.5-7 cSt,
15w50 ~8 cSt or about the same as 0w20 at 220°F.
I ran 5w30 for 10 out of 13 track days this year. For the other 3 track days I ran 0w20 because of poor planning/preparation on my part...
Next year I'll run 30- or 40-weight at every track day. Given the relatively limited number of track events, shortish duration of stints, and daily-driver status of the car, I don't think 15w50 is warranted in my case. I still have no plans to get an oil cooler...