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Re: Engine Oil
after replacing my maf sensor i deposited the k&n that came with the car in the trash. the largest issue i see with the k&n is that the oil and dirt coats the maf sensor hot wire and deforms it due to the extra heat, doesn't seem to matter on american cars but i have a stack of questionable asian mafs that i took out of cars with less than 30k because the owner over oiled the k&n.
as far a oil, i have recently been buying bmw full synthetic from the dealer. it's castrol full synthetic and they sell it cheaper than the castrol brand does at auto stores.
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