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Reply to "Advice on Oil Viscosity for a fast road/race engine"

Westfield ,

The article you speak of probably is refering to Formula 1 engines in general where they use a thinner viscosity on long tracks than on shorter tracks with many corners which place the engine under higher load when then , they choose a slightly thicker VI lube because of increased oil temps and thinning . These are dry sump engines where oil temp is closeley controlled .

If your engine is not fueling up the oil you might could go with a well built approximate 10.5 centistroke 30wt under all conditions you speak of . Some additional safety can be had with a high end 5w-40 such as Silkolene , Motul ect in that Ford engine .

Fuel loading and thinning of the oil will always be your engines worst of enemies
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