A week back i picked up my 500ss. When i got it, it was prepped with, the 100% Synthetic XP-S. I want to run the cheap Mineral Oil. The dealer completely downed the Mineral oIL and wanted me to only run a 100% syn, regardless of brand. So, the question is, since this has been prepped, and i have started it to get it on and off the trailer. It has 0 miles. 60 out right as i speak. I have to drive a few hours north (im in s. nj) I hope to get to use it before soon, but iWould it be wise to go with the 100% against dealers advice or just run it. I like synthetic but at break in i know it is bad on the rings, right? I figure i have enough expense, and if the Mineral oil will work, and it has alot of good feedback on here as it is. Fwiw, the dealer told me not to believe what i read on Dootalk, hahaha. But i still wouldnt mind hearing what people think.