Can you mix 5w 30 and 10w 30 oil?

Can you mix 5w 30 and 10w 30 oil? Yes, if topping up. If your oil must be topped up, then you are burning oil already, so the difference won’t cause more damage than is already there. 5W30 and 10W30 are essentially the same at operating temperature. Is it bad to mix 2 different engine … Continue reading Can you mix 5w 30 and 10w 30 oil?