Looking for a ~10 cSt @ 100°C lubricant or for a gearbox without synchronizers. High lubricity is the goal, cost is no object. What is the best?
Long change interval would be nice but not necessary. Anti-wear, anti-scuff performance is required but not extraordinary. Shear rates are lower than a hypoid gear but higher than an engine. Oil will be filtered and cooled to 100-120°C. High VI would be nice but not necessary. There are no copper-containing components exposed to the lube.
For convenience, 10 cSt is SAE J300 30 grade, or SAE J306 high 80 low 85 grade.
So far I found CAT (Caterpillar) TDTO SAE 30, but it appears not to be synthetic. I would think full synthetic would perform better but I don't see an equivalent with the desired viscosity.
Long change interval would be nice but not necessary. Anti-wear, anti-scuff performance is required but not extraordinary. Shear rates are lower than a hypoid gear but higher than an engine. Oil will be filtered and cooled to 100-120°C. High VI would be nice but not necessary. There are no copper-containing components exposed to the lube.
For convenience, 10 cSt is SAE J300 30 grade, or SAE J306 high 80 low 85 grade.
So far I found CAT (Caterpillar) TDTO SAE 30, but it appears not to be synthetic. I would think full synthetic would perform better but I don't see an equivalent with the desired viscosity.