Alright well it's about time for an oil change and I wanna switch it up and potentially ditch the ole Castrol from auto zone and get something nice. I talked to the mechanic who installed my RB's and saves my ass when things start blowing up, and he recommended Royal Purple, Motul, or Liqui-Moly. Looked a little into both, plus searched on here some, and I didn't find a lot of results. Really interested in some of the Motul 300V, some claimed it was more or less oil from the baby Jesus but didn't say much else. Anyways, who has experience with these brands? What benefits did you see? Any drawbacks, such as shorter life? Using the stock 5W-30 or something else?