Re: Unleaded gas or use a lead additive for new en

Posted by Janicholson on August 30, 2006 at 06:12:36 from (199.17.6.122):

In Reply to: Unleaded gas or use a lead additive for new engine posted by scott#2 on August 30, 2006 at 05:23:13:

I was a mechanic in Colorado when leadfree "Oxygenated" MTBE, and Ethenol fuels were introduced. From that point in time I have seen only bennefits from these fuels. Fewer engine deposits, clean long lasting spark plugs, less wear, and longer engine life. With one exception, all my vehicles were designed to run on leaded fuel. In all my career I have never seen a vehicle that was worked on by anyone where I worked that was dammaged by modern fuels. All stories I have heard were from marginal mechanics blaming fuel for bad practice. Unleaded fuel today is far higher in octane, and more free of deposit building chemicals and metal based molecules than any 50s farm fuel. I have never seen a valve failure from "lack of lead" deposits.
Some engines in some vehicles/tractors are mediocre in design and need higher octane fuel (and low ash/synthetic oil to avoid coking on valve stems, but it is not an intrinsic fuel problem. JimN

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