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SAE 30, 40 or 50?

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Old 02-25-09, 04:02 PM
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SAE 30, 40 or 50?
Anyone run any of these in a rotary. Any reason not to, or reasons you would? Just curious.
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Old 02-28-09, 03:40 AM
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Not really sure of the purpose of your question. Mazda recommends running multi-weight in every owner's manual and FSM that I've seen. That provides better startup, broad temperature range and overall protection than a straight weight oil can.
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Old 03-03-09, 07:38 PM
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i've only heard of people running single-weight oils in race-only rotary engines. in the same breath, most rotary racecars that i'm aware of use multi-weight oils though. what exactly is you interest/concern?
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