Honda CBR250R Forum : Honda CBR 250 Forums - View Single Post - Is 5w30 conventional okay?
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post #12 of Old 02-06-2019, 09:37 AM
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I've been using Mobil 1 Racing oil (just for motorcycles) since the CBR was new. It's 10w40 but the oil is 100% synthetic and flows really well so it doesn't bother me about the 10w40 instead of of 30. The 40 is also extra protection when it's hot. It's 10 bucks a quart which is expensive but only 1.5 quarts every 4k miles doesn't bother me.
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