The viscosity defines the resistance to fluid flow. For a lubricant varies with temperature. The choice of the viscosity of oil will therefore depend on its use (engine, transmission, hydraulic,...)
300V Factory Line Road Racing 10W40
100% synthetic 4-Stroke motorcycle racing...
7100 4T 10W40
100% Synthetic with ester 4-Stroke engine...
5100 4T 10W40
Synthetic blend(Technosynthese) with ester...
3000 4T 10W40
Mineral based 4-stroke engine oil....
E-TECH 100 10W40
M/C Synthetic Engine oil