I called Amsoil and asked about this many years ago. They said for *my* bike, with the 5 speed tranny, they recommended the same 20w50 in all 3 holes.
This might be the best oil product of the century.. Valvoline Restore and Protect for gas motors.
Trying the Valvoline protect and restore and it's been great
I run the 5w-40 amsoil diesel oil in mine. No issues whatsoever.
My GT350 gets Amsoil. Had no issues with either one.
I , personally, like Valvoline products. I've opened up engines just to see sludge built up from not changing your oil or using cheap oil and not changing it enough. I have found that engines that used Valvoline oil were much cleaner on the inside. After many miles. Compared to other brands.
Using the same oil but 15W50 for Himalayan. Satisfied with the performance. Even after long rides, the engine feels crisp.
used Amsoil 5w20 last oil change and just did an oil change at ford with motorcraft due to my poor planning… typewriter tick is back with this oil. Didn’t have that at all with Amsoil.
Having recently transitioned from Motul 7100 to Amsoil Metric 10W40 for my Yamaha MT 15, for about 4000km I sought an oil that could deliver reliable engine protection and smooth operation. here are my pros and cons
I use Valvoline 10w-30 synthetic blend high mileage over full synthetic because it completely gets rid of the VVEL tick and adds more protection since it’s thicker and last longer since I love to redline ???? + k&n filter 1008 or 1010
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