Posts Tagged: best oil viscosity

Why Thicker Motor Oil Isn’t Better For Your Engine

Oil Viscosity Explained: Thick vs Thin Oil Myths Debunked Quick Summary Thicker oil doesn’t automatically protect your engine better. Instead, motor oil viscosity must match the engine design, operating temperature, and oil control, not old-school assumptions. Controlled dyno testing shows that low-viscosity oil versus high-viscosity oil reveals clear trade-offs among friction, power, oil flow, and wear. Thicker oil can reduce wear in some situations, but it can also increase friction, slow oil delivery, and cost horsepower. The real answer isn’t “thick or thin”—it’s using the right oil viscosity for the … Read More