Hello Gents and Gals, Alas, I sold my '74 bmw 2002 after 34 years leaving memories and ten quarts of Mobile1 10W30. - Can I mix these ten quarts with ten of Mobile1 00W30 and pour off 20 quarts 5W30 suitable for use in my 2000 BMW 323iT and my 2002 BMW 525iT? - should I put 1 quart of each in a 5 quart jug and shake the heck out of it, or will the motor do the mixing? - is there any chance of some terrible mechanical engine outcome from this? - Mobile1 says not to do it while David, the Redline spec tech says, "not a problem!" Help Me Out Here Please, Gary
