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Re: Synthetic Motor Oil: Extended Drain Interval - or Not?
Posted to Castrol Forum on 2/14/2017

Kevin

You think it gets crazy here. You should go over to Harley Davidson blogs. About Engine, Primary and Transmission opinions.

I will admit that I may not follow Harley's recommended oil in the tranny. So I am just as guilty. Haven't decided whether to... Login to read more.