The mileage varies a little each time. It holds 4.2 quarts. We have always gone by when the maintenance minder gets to 15%. That is what the book says to do. If the PCV valve and the red line doesn't help, I will go by a mileage schedule.
I am going to replace the PCV valve and try the Red Line and go from there. I put Valvoline high mileage in it Saturday. Can the PCV valve be cleaned out?
I bought this car new, going by the maintenance minder I change the oil when it gets to 15%. It is always low when I do change it. Last week my wife got home and it was chattering. Shut it off and I checked the oil and put a quart in it. Never been that low. The mm was at 40%. I went ahead and...