I changed the oil/fiter for the first time on my 5.3l Avy to Mobil-1.It took almost 7 qts.to get near the full marker on the dipstick.Anyone else use this much?
Should one go by the dipstick marks or factory specs?I ask this because I know that an overfill can be harmful.Also,my oil pressure runs fairly high(60 psi underway);is pressure affected at all by the amount of oil as long as it's not way too low?Thanks for any help.
PS-my gas mileage was up by .8 mpg after the change to synthetic.It had consistently been at 15.8 for 5-6 tanks,but was 16.6 on the 1st tank with Mobil 1.I sure hope this continues!
Should one go by the dipstick marks or factory specs?I ask this because I know that an overfill can be harmful.Also,my oil pressure runs fairly high(60 psi underway);is pressure affected at all by the amount of oil as long as it's not way too low?Thanks for any help.
PS-my gas mileage was up by .8 mpg after the change to synthetic.It had consistently been at 15.8 for 5-6 tanks,but was 16.6 on the 1st tank with Mobil 1.I sure hope this continues!