Royal Purple

[mikes67]

I was given two cases of Royal Purple and I went back to swap one for a 10w 30 instead of the 30w and the guy that works there asked me when i walked in "what are you trying to do blow something up" and I said no it was given to me and I was swaping one case for a 10w30 because I don't like straight 30w and he commenced to tell me some horror stories about peole he knows that have run the oil in their car's. He is a big time drag racer, works in a respected speed shop so i think he may know something i don't but i wanted to toss this out there and get some feedback.
Let me hear from someone on how they feel or if they no someone who uses the oil.
Thanks
Mike