| Re: "Higher Milage" 5w30 or 5w20? MOst 5-20 oils i came across are already synthetic blends, all major car companies are using it now, ford, hyundai, mopar, gm, honda... are going with 5-20, i've seen many 100k+ fords using 5w-20 with no problems and no leaks, i'd say stick with 5w-20 its what the engineers came up with when they built the motor so leave it to them and keep with 5w-20. To make it clear most top brand oil names that make 5-20 weight are synthetic blend, so i wouldn't switch over to a non synthetic 5w-30. |