I know what the video says and all but, it seems to me that General Motors Vortec engine line really is responsive to higher octane. Stellar performance? No. Your basic octane booster gives your engine an edge. I prefer STP myself. Vortec 4200, and 4300 are the only motors ive had a difference wi...
I know what the video says and all but, it seems to me that General Motors Vortec engine line really is responsive to higher octane. Stellar performance? No. Your basic octane booster gives your engine an edge. I prefer STP myself. Vortec 4200, and 4300 are the only motors ive had a difference wi...