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So when I ordered oil for all my fluid changes, I ordered both 10w-40 and 20w-50. Manual says use 10w-40 under 40F degrees, and 20w-50 over 40F degrees. Today I used the 20w-50, seems to run pretty quiet.
What weight do you all run and when? I really don't recall why I ordered the 10w-40, since I really wont ride under 40F degrees. Should be fine to use sometime tho I guess.
VR1 20w-50 in winter time, Valvoline VR1 straight 50 in the summer
Valvoline 80w-90 hypoid in trans
Rotella T or Type F ATF in primary depending on season.