- Aug 7, 2020
I'm planning a long road trip of about 1,600 miles towards the end of the month. The Camry has M1 EP in the sump. It's possible that I may need / want to top off the oil during the trip. I have two 1/2 quarts in stock that I'd like to use for this purpose. One is M1 10W-40 High Mileage and the other is Castrol Edge EP 5W-30. Which do you think would be a better choice to top off with?