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Why is it that I use every brand of oil it burns oil but i switched to castrol edge high mileage. (keep in mind i was using high mileage blend of others.) But I have used literally every brand of oil and last time i went to walmart i said screw it ill try castrol this time. it was notorious for...

Can I mix mobil1 5w30 high mileage extended performance & Vavoline High mileage synthetic blend 5w30? It seemed to stop my oil from burning I added about 0.2 quarts seemed to do the fix. I have a PurolatorBOSS oil filter 15k interval filter. I have a 4.7 ram it was burning like crazy till I put...

What oil would you guys use? I've been using vavoline 5w30 and shell rotella gas truck with a k&n high flow filter. Seems to become brown after 3000 miles every time. I was thinking about giving Amsoil 25k interval a shot to see if it would be any different.