Re: grey color oil

Posted by Jerry/MT on October 13, 2005 at 21:23:07 from (206.183.121.85):

In Reply to: grey color oil posted by Jim-bobb on October 13, 2005 at 21:10:01:

If you don't use the tractor much and live in a high humidity area you can get condensation in the engine oil. Excessive blow by can cause the problem since water vapor is one of the products of combustion. Does your tractor have a crankcase vent tube? If so, make sure that it isn't clogged. If it isn't clogged, are you seeing a lot of vapor coming out of it when you are running? A compression check can give you an idea about blow by. Low compression readings usually mean excessive blow by cause by worn rings and sleeves. You reall ought to consult your owners manual about oils for cold weather. the manufacturer usually specifies this. At the risk of being proven wrong by the owners manual recommendation, I would think a 10W30 oil and a 15W40 oil would be good to -20F. Make sure it's theright API classification for your engine type.

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