Posted by mkirsch on June 04, 2012 at 06:36:44 from (64.80.110.75):
In Reply to: Lead additive posted by Jerry Hrenchir on June 03, 2012 at 19:18:59:
There is no tetraethyl lead in the "lead substitute" because it is a SUBSTITUTE. Note the word *substitute*.
Supposedly whatever chemical is in the lead substitute is supposed to perform the same function as the tetraethyl lead used to. Supposedly.
It is NOT lead. It never was lead. Nobody ever claimed it was lead. Hence the word "substitute" used when referring to the product.
Did I mention the product is called lead substitute?
Whether it actually does anything or not is up in the air. Most people, myself included, believe it is snake oil.
I've only ever witnessed one case of valve seat erosion from lack of lead in the fuel. It came up last year on a 1975 Ford 351 V8 engine in a custom van that the owner tows an RV trailer around with all summer. Been running unleaded in it since leaded fuel was outlawed for on-road use. It was due for some engine work anyway, so he replaced the top end with all new Edelbrock parts. Sounds sweet, for a Ford.
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