Quote:
Originally Posted by JHZR2
...dont try to compare something that is in there at 1000:1 (something like 0.2%) with something in there at 10%, 15% or 85% and say that they are the same...
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Tetra Ethyl Lead was added to gasoline in less than 1:1000 ratios for leaded gas. It will destroy a catalyst very quickly in a modern car. Even trace amounts of the wrong RTV silicone used to seal engine components will destroy an oxygen sensor:
http://cds.activant.com/C2C/C01/68/541/824663110.pdf