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,...)
7100 4T 20W50
100% Synthetic with ester 4-Stroke engine...
3000 4T 20W50
Mineral based 4-stroke engine oil....
Twin Syn 20W50
Synthetic blend with ester 4-Stroke engine...
Lubricant specially designed for engines...