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Re: 2005 Gasoline Versus 1930's Gas
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Posted by Paul in Mich on February 20, 2005 at 16:29:59 from (66.188.26.29):
In Reply to: 2005 Gasoline Versus 1930's Gas posted by Bill in NC on February 20, 2005 at 12:45:29:
Probably the biggest difference in todays gasolene and that of 30 or 40 years ago is the lead content which is virtually non existant today. Back 40 years ago it was necessary to have lead added to reduce pre-ignition and to enhance valve lubrication. While lead is no longer used, the refineries have discovered and added other properties to accomplish the same end result as adding lead, which was less environmentally friendly. When I had my 57 Chevy I had to add an additive available at NAPA and other automotive supply stores to todays gasolene to keep the engine from spark knocking (283 ci). I have 2 antique tractors that run just fine on today"s gas. I have had people tell me that I should use an additive for valve lubrication, but then again others have told me it doesnt matter. I would suppose that the low R.P.M.s of the old Letter series Farmalls don"t require the additive as would a higher RPM, higher compression engines used in automobiles.
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