Well i've tested Redline already and well i still stick to Castrol...somehow I dont really see the difference in them, the only difference is that the other oils usually burn out faster in my engine, when i really push the engine, and the castrol doesnt...so i stick to that. :mrgreen: BUMP. :mrgree...
Some ppl have claimed that their engine performed better with the use of Royal Purple! I have never used it so I can't really give my input into if it's a better oil than Redline or Castrol. But I can say that Castrol Full Syntec and Mobil 1 full syntec are great oils!!!! Very costly but great! Tho...