Originally Posted by leje0306
I have two 3.5 Ecoboosts in the garage. I know the 5w-30 semi syn Magnatec produces some great results, but now that the bottle says full synthetic, has that changed?
Interesting question. I have used both and I have to say, I liked the semi-syn better. Seemed smoother and quieter with the Semi-Syn( original 5w-30 Magnatec)