I kid you not!
First thing I noticed when I changed oil was this Royal Purple is slippery like an eel. I rubbed it thru my fingers and it is slick! I'm using the 15w40 RP for the first time and was much thicker out of the bottle than the dino equivalent Delo 400 I just drained out. Well after putting in 6 qts I started it up. Felt smoother. Then I backed it out of my driveway and gave it the same throttle I always do down my block. My car accelerated way faster. I already have 450rwhp and 480rwtq so must have picked up at least 15 hp according to SOTP. So the claims Royal Purple makes is no bull. You are going to gain HP, and for sure fuel mileage cause it takes less throttle now than before to go the same speed. Anyways I know a lot of you won't believe me, but I'm just stating the facts. My car IS a whole lot faster with Royal Purple!
Leo
First thing I noticed when I changed oil was this Royal Purple is slippery like an eel. I rubbed it thru my fingers and it is slick! I'm using the 15w40 RP for the first time and was much thicker out of the bottle than the dino equivalent Delo 400 I just drained out. Well after putting in 6 qts I started it up. Felt smoother. Then I backed it out of my driveway and gave it the same throttle I always do down my block. My car accelerated way faster. I already have 450rwhp and 480rwtq so must have picked up at least 15 hp according to SOTP. So the claims Royal Purple makes is no bull. You are going to gain HP, and for sure fuel mileage cause it takes less throttle now than before to go the same speed. Anyways I know a lot of you won't believe me, but I'm just stating the facts. My car IS a whole lot faster with Royal Purple!
Leo