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Old 09-08-2019, 03:28 PM   #2
JBill
Senior Member
 
Join Date: May 2010
Posts: 635
Default Re: Marvel's Mystery Oil

Probably true, likely because it defeats the purpose of emissions controls, and California is pretty sensitive about such things! Here in my part of Indiana we have emissions testing, and I would not put MMO in any vehicle that had to pass our tests. I do use stuff like Seafoam, but I don't think it adds any particulates to the exhaust. Notice I say "probably true," because this is all speculation on my part.
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