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There's no logical reason in the world why 0-40 would do any harm.In cold climates it is superior on cold starts. Porsche uses 0-40 M1 as factory fill on all there cars including turbos GT3's, and the $200k new GT2. These engines cost $45,000.00 + to replace and the turbos are running 1.4 bar of boost (over 20lbs) .it's hard to believe it's not going to handle a Toyota 4 cylinder motor that was made to sell in a $18,000.00 car. carl
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