Time for yearly oil change. I checked records and July is the last oil change with 0w20. I know the Pentastar does care however now that I am down to 5qts of Valvoline High Milage 5w20 and Shell gas truck 0w20 qt. I will be changing up to 5w30 after this oil change so what would you do. Get a 5qt of Valvoline Advance 5w30 for the 1 qt, Valvoline 5w30 plus take a qt from the high mileage or use 5w20 high mileage and Shell Gas truck 0w20. Either way without buy a quart of oil. Reason for the change is all lawn equipment is 5w30 so this makes it easier. Besides all the family vehicles (4) take 5w30.