I will be moving to Colorado next week. My brother and my sister in-law will be living near by. They have a 92 Accord. They take it to a oil change shop every 3,000 miles. I told them I would do the maintenance on it now. I just bought two bottles of ARX. I also picked up a couple of Wix oil filters before I go. They been using 5W-30 bulk oil for awhile now. I will keep using that viscosity. Should I switch to High Mileage oil or stay with the regular stuff? They have the 2.2L 4 cyl. This engine will last pretty much forever. I was thinking I would use Havoline or Castrol GTX 5W-30 during the ARX cleaning and probably after. I won't be switching over to synthetic after the cleaning.