Here is a data sheet of 2 5W30 full syn oils. Is a higher or lower viscosity number a better oil?. Opinions on which is the better 5W30 oil below?.
1st Oil
Viscosity at 40 Degrees C = 61.7
Viscosity at 100 Degrees C = 11
Vicosity Index = 172C
Flash Point = 230
2nd Oil
Viscosity...