been doing some research into synthetic engine oils which included a rather interesting email exchange with one of the SynLub Lube-4-Life fellas. clearly there is some bias here as he only trusts vehicles with 6 wheels - 4 on the ground, 1 in the trunk and one in the drivers hands, as he puts it. still, he brings some rather interesting comments and data to the table. see for yourself... me: SynLube (sends 3 replies): SynLube: SynLube: me: SynLube: me: SynLube: so... in the end... i dropped the conversation at this point as he never really addressed any of the points i made in my last reply. i DO give him credit in that he didn't act like a typical salesman and try and push the produce down my throat, but either his logic is flawed or i'm not understanding what he's trying to get across - seems to me that in a harsh operating environment like an MC, you'd want extra protection, not less, especially where high heat can be a problem, yet he kept insisting that synthetic is useless in this application.