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I have a v12 volvo with 816K miles on motor and 25,000 on oil sample oil sample shows a 3.7 fuel dilution is that high, OPS test flagged it and said it may be to idling however i don't idle too much what to do add Lucas or ?

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Define not to much idling..and add a gallon of Lucas and get it into the shop sooner rather than later

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3.7 fuel dilution is getting right up there

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Should be able to take it to Volvo and they can put dye in the fuel and search for the leak with a black light. Probably coming from an injector. Wouldn't advise that you keep running it in this condition.

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Lucas is just an oil thickener. No beneficial additives of any kind. Just 250w base oil. Will not help any with fuel dilution issues. You need to find out what is going on. By chance, are you running a Fleet Air Filter also? Reason I ask, my 12.7 was experiencing some fuel dilution also. Once I took the FAF off and went back to stock, it stopped the dilution issues.

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AL will be eternally grateful.
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