Ok well i'm due for a oil change in my car and i want to know if using a high mileage oil in my car such as Castrol, Quaker State, Mobile 5000, or Penzoil would be good for the engine since it has over 190,000 miles on the engine. I'm just not too sure about it and would like some advice. I use 5w-30 in it. Also i want to use a bottle of motor flush to help clean out the engine, but will i have to drain a quart of oil out to put it in?
Apr 19, 2010 at 2:01 PM