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D@mn, you’re right and thanks for pointing that out. I just went solely off of B-stone’s viscosity specs in the UOA report. Found an old article on why their 50w specs may not align: https://bobistheoilguy.com/forums/threads/trying-to-understand-sus-cst-viscosity.232606/

Believe me, I share your concern with synthetics & heat especially how the m8s use oil to cool the heads and areas near exhaust valves. I’ve run synthetics for decades now in everything I own but am starting to notice a shift (albeit subtle) towards conventional on M8’s. We’ll see.

I did try the Synthetic VR1 and top end was noisy in the heat just like Amsoil. Mobil 1 has been pretty quiet, and the conventional VR1 has been silent. Im not running stock exhaust either…lol. Ran Mobil 1 for a long time with no issues, although it can get somewhat noisy in the 100 degree...

Apologize, still working on how to get a clearer image of the UOA since we can't upload PDFs.

Saw two posts from the same member where the VR1 sheared @ 1500 in his M8. I have been wanting to run this oil in mine so I did the same mileage and sent the sample out. Happy to see that the oil did not shear. Will run the full 3K and send out again. Bike has Stage 2 ( cam, intake, exhaust...