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Old 11-05-2011, 05:56 AM   #11
FF
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RE: Lucas Oil additive???

Lucas oil is a simple thickiner.

If your book recommends SAE 30 and you add Lucas , you are simply home brewing 40wt oil.

Fine near "the End" to cut down on oil consumption , hide knocking bearings or restore some compression and stop visible smoke..

Most engines will last longest with a straight weight oil, but cold starts are not as easy , and synthetic multi viscosity does give 2-3% better fuel burn.
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