I have conventional oil 20w-50. I have in the past allways run 10w-30 Full synthetic. I think I will go back to the 10w-30. I change it every 2500-3000 miles


1997 Montero LS with a motor swap a 1990 V6 12valve ported heads full 2.5in Ex I run stock tire size for Daily use, off road have 33x12.5 working on going trubo.