Can you mix 10w30 and 5w20?

Can you mix 10w30 and 5w20? Can you mix 5W20 and 10W30? Yes, you can mix both oils. ? Modern cars are designed to use lower viscosity oil ranges, so they can properly lubricate ( see attachment) Going from 5w-20 to 10w-30 should cause no harm for one oil change. But if you engine as … Continue reading Can you mix 10w30 and 5w20?