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which oil?



What brand/weight oil are you track day'rs running nowadays? I have a 98 E36
M3 (upstate NY) that needs a change (want to do myself). The car is 90%
track-day-use and stored winters (cold storage).

The owners manual seems to indicate 15W-40 based on operating temp range,
though from the bimmer messageboards I see people using everything but!

Recommendations? Where best/cheapest place to purchase?

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