Don't worry - we all used Valvoline at one point, just like Fram oil filters. When the marketing hype clears, the truth tells trhat these products are mearly just adequate, if that.
BTW- my comments earlier on the 5w-30 must be changed. My truck is now starting and running without noise. However I do notice a big performance difference using dino in a cold engine rather than syn. The dino seems to make more vibrations before its fully warmed up and seems to make the motor more sluggish. Well so much for my scientific study!
BTW- my comments earlier on the 5w-30 must be changed. My truck is now starting and running without noise. However I do notice a big performance difference using dino in a cold engine rather than syn. The dino seems to make more vibrations before its fully warmed up and seems to make the motor more sluggish. Well so much for my scientific study!