Yeah, I saw that Slick50 lawsuit info and the pretty outrageous specific claims they made that lead to that....I'll skip the SLICK50 thank you!
I put Royal Purple 5w-30 in this week. I just thought one of those additives would help keep my high mileage VX going for another 64k miles. (I know 64k ISN'T high mileage compared to other VXs).
Found "LUBEGARD" for synthetic oil at NAPA auto store & "test results" on back of package show it's considerably more effective than SLICK 50 and Dura-Lube. Salesguy said it was the best it. It's so frustrating trying to find out what products are really good vs. what sales person says! That's why this forum is so helpful!