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Well the saga continues. I am set to put some CAstrol syntec, or mobile 1 in Box. Problem is nobody has any xxW40. its all xxW30. I know better to use the latter(30 is bad).
My question is they do have M1 10W40 (highmilage) AND 5W40 (turbo diesel truck) Can I use either one of these?
My local Oreilleys has buy 4 get 5th for free(upto two free) on Mobile 1. This is perfect for me.
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