Can I mix different weight oils in my car?
April 17, 2006 8:40 AM Subscribe
I just got the oil changed in the car. I usually get them to put in 20-50, but this time they only had 15-45 or whatever it is. Problem is that I have about 10 quarts of the former and none of the latter in my trunk. When I top off the oil in the coming months, can I use the heavier stuff, or should I get the lighter?