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It's not a fix for the presently stuck clutch. The proposed resolution for the immediate issue of the stuck sprag clutch is to pull the side cover and spray cleaner and lubricant into the assembly in an attempt to free it up. Anecdotal comments from BMW forums indicate some are running Rotella...

Sorry to hear that didn't do the trick fully. I've not dealt with this K1200 issue personally, but here are my takeaways from my understanding of it and his videos--he also has a K1200 teardown video that gives an idea of the internals of the engine, exactly how the sprag clutch is situated...

A little late here, but FWIW: I put a '72 T120R (OIF 650) back on the road in 2016. My father bought it new in '73, rode it until '85ish, and stored until I revived it. I've run nothing but plain old Valvoline 20W-50 conventional motorcycle oil, no additives, and it's been fine. In 2020 I...

Since the engine oil is isolated from the clutch your idea doesn't sound out of left field---though if the Seafoam doesn't do it I'd wonder if the HPL would have much effect. Not because of a failing of the product, but because the oil flow to that area is minimal. I would be inclined to do...

Thank you for including that detail, I was not aware of the Euro origins of that engine. To clarify my understanding from reading the forum and this thread, is part of the rationale for the 0W-40 viscosity to maximize cold start flow while moving to a viscosity that better resists the...

Could you provide more detail re the 0W-40 recommendation?

Thank you, could you expound on the 0W-40 SP recommendation?

My wife brought a 2013 Chevy Equinox with the 2.4L Ecotec into our marriage, currently with 83K on the clock. I've been servicing the vehicle for the past six years. I've never exceeded the oil life computer's OCI--worst case it was changed when recommended, but usually by 4K at most. During...

I presume I'm included in that statement, to clarify: I am not promoting this product. My intent was to flesh out OP's question with the company's assertions, because I was interested to see the response from more experienced BITOG participants. Considering the history of additives it was all...

Their claims from the Oil Treatment product page (https://prolubeoil.com/products/prolube-oil-treatment): -------------------------------- "Prolube Oil Treatment is made with a highly-concentrated blend of lubricating oils that can be safely used in all types of gasoline & 2-stroke, 4-stroke...

I think they also post most of them on their Instagram account (see Reels tab): https://www.instagram.com/prolubeproducts/