really?
hhmmm...
They do make a synthetic lucas, I just couldn't justify spending the extra few bucks on it for no reason.
I've always had good luck with it.

The only horror stories I have heard about it were when it was used with oils with lots of detergents in them. like high mileage ones and all of that.
I guess it would have to do with how the synthetic blended with a conventional oil. If they don't mix, then I could see it being a problem.
Don't know how true it is, but I was always told that if they sell a conventional/synthetic blend, then the synthetic will mix with the conventional just fine since they don't make a "blendable" and a "nonblendable" version of the same synthetic just to mix with conventional. Castrol sells a blend, which, as I understand it, is just GTX mixed with Syntec.
Maybe that's why I got away with it with no problems.