Valvoline Synpower 75w-90 lists the following:
100C degrees vis at 15.60, 40 degree vis at 100, viscosity index 150, pour point -48C, gravity .865, density 7.22.
Valvoline High Performance Gear Oil 75w-90 lists the following:
100 degrees vis at 15.47, 40C degrees vis at 99, viscosity index 166, pour point at -45C. gravity .865 , density 7.17.
Aside from the larger number of "approvals" listed for the Synpower, would it be correct to say that these two oils, with the data listed, would be similar in the protection they provide given modest change intervals or could the High Performance (conventional) gear oil even be considered as a better overall oil? Assuming the oils are used in a automobile or pick-up truck differential and the vehicle is not raced or involved with a lot of heavy towing.
100C degrees vis at 15.60, 40 degree vis at 100, viscosity index 150, pour point -48C, gravity .865, density 7.22.
Valvoline High Performance Gear Oil 75w-90 lists the following:
100 degrees vis at 15.47, 40C degrees vis at 99, viscosity index 166, pour point at -45C. gravity .865 , density 7.17.
Aside from the larger number of "approvals" listed for the Synpower, would it be correct to say that these two oils, with the data listed, would be similar in the protection they provide given modest change intervals or could the High Performance (conventional) gear oil even be considered as a better overall oil? Assuming the oils are used in a automobile or pick-up truck differential and the vehicle is not raced or involved with a lot of heavy towing.