Oil???
i've been using mobil 1 5-30 and burning oil na before i ever sprayed. i was thinking about switching to mobil 1 high milage 10-40. i don't understand how my sythetic 5-30 was to be changed changed everyt 3000-3500 miles when mobil 1 has 5000 mile change, 7500 mile change, and the high milage available. i read a thread in maintenance that said one of the three that i named was actually better than the synthetic( forgot which one so i got the high milage).

