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After several years of buying OUTRAGEOUSLY priced Toyota S/C oil,, I decided to dump the dealer. (story of my life, sic)
I asked several Chief mechanics running superchargers on V8 competition engines at the SuperBoat Championships when they came to Deerfield Beach for the offshore boat races what they use.
3 of 4 Chiefs said they use Royal Purple.
Good enuff reference for me. ($11//Quart) for the last 8 years.
BTW the Service Manual calls for 130cc of supercharger oil
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NOT mentioned!!: Front housing cover requires greasing during maintenance rebuilds. Page sc-14 item #5
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