Being relatively new here and only recently left the ranks of the 99.9% clueless, I can only add my experience. I drive a 96 Toyota Avalon(that apparently preceded the "sludge mobiles") that now has 175K on it. I don't remember when I had the first OC performed but I'm sure it was at the dealer. I started doing my own at about 8K using Castrol 5w30 and Toyota filters. From that point on I was religeous in changing it at 4-6K (not too many at the 6K interval). If it uses any oil, I haven't noticed. If we were so inclined, we could probably drive it another 50K. This thing has had so few problems that even my wife is agreeable to replacing it with another Avalon Her only gripe is the small mirror on the visor.
I realize this is an enthusiast's forum, but I think I will stay in the camp that follows the owners manual as long as it is convenient, and use a good(as defined by BITOG)oil and filter. Criticisms of this approach??
I realize this is an enthusiast's forum, but I think I will stay in the camp that follows the owners manual as long as it is convenient, and use a good(as defined by BITOG)oil and filter. Criticisms of this approach??