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Re: Re: Leaded Gas
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Posted by Farmall Gray on February 24, 1999 at 17:49:56:
In Reply to: Re: Leaded Gas posted by MARKL on February 24, 1999 at 16:51:46:
You seem to have all of the facts but you have them confused a bit. Or at least the way you worded it made it sound confusing. The lead acts as a lubricant between the valves and the seats. That is why modern engines designed to use unleaded have hardened valve seats. The lead helps prevent valve seat recession
in older engines with soft valve seats. To answer the original question, I have read previous posts
on this subject and most people said that the lead substitutes were just kerosene and they tend
to contribute to plug fouling. I have read a lot of magazine articles on this over the years and they all said if you dont work the engine hard
often, you shouldn't have trouble. If you use this tractor regularly for heavy tillage or pto
operation you should have hardened valve seats installed.
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