I've been using Either Castrol or Amsoil in my car starting at 110,000 miles. My oil change plan now is to change the filter at 3,000 miles and add 1 quart of castrol or Amsoil that was lost when I took out the Oil filter. The only time I do a full oil change is every 10,000 miles. Seems like a good plan?
I'm still contemplating to see if I should use Maxlife Synthetic instead.
I'm still contemplating to see if I should use Maxlife Synthetic instead.