Posted by jdemaris on October 04, 2010 at 11:50:03 from (72.171.0.147):
In Reply to: Re: Lead additives posted by Kruse on October 04, 2010 at 10:54:32:
Many people say things based on "gut feelings" or something gets said, instead of what it is actually based on. Kind of like politics. what they've heard .. . or anecdotal events. I know some people base truth-value on how many times I was a Deere mechanic when leaded gas got dropped in the US, so I've been hearing many of the stories for a long time. And at that time, we did have customers using gas-tractors hard and full time. Wild exagerated claims were made about engine failures - just to sell products. Machine shops also did it trying to sell valve-job upgrades. But that does not negate the fact that there can be some problems with unleaded fuel in older engines. When leaded fuel got dropped there were many fears and complaints. Not mixing properly with oil for two-stroke-cycle engines, not cleaning grease as well as leaded, engine failure, no other suitable octane enhancer, etc. &c. But with many BS stories, some truth lurks behind the hyperbole.
I've worked in injection pump shops, auto machine shops, and in several tractor dealerships going back to the 1960s. That being said, I rarely get to know - for sure - what causes certain failures. Much gets based on assumptions.
I hear a lot of nonsense with unleaded gas, with high sulfur low-lube diesel, etc. Both situations have been researched and subsequent lab testing done. I'll trust the lab and test results over anybody's word or feelings.
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