15,000 mile oil change

[TreeDoc]

Amsoil is the bomb. I've been running it for years. If I run out, I'll substitute with Mobil 1. I spin on a new filter every 3000 miles and only use a high quality filter like Wix, Purolater, or Amsoil. Stay away from the Fram crap. Just cause every store in the world sell the orange filter doesn't mean it's good.

The synthetic stuff is for real. I have a friend who runs a Courier business. If you have a corporate office in San Francisco and have Payroll or that special document or package that needs to be in Los Angeles that afternoon, you call this guy's company. They run a fleet of small pickups and they pay their drivers 7.50 an hour to do it. You can't expect many employees to take care of your stuff for that kind of coin. In their new trucks, he runs a non-detergent oil (against factory recommendation) right up till the point the truck stops burning oil and the rings are well seated. They then go to Amsoil purchased in 55 gallon drums along with Amsoil filters. Most of his rigs are a couple years old right now. He does not have one with less than 300,000 miles on it. Not one has had an engine opened up. This has been going on for years. Even with rigs at 500k, they've never had a motor failure.

The aircraft analogy works to an extent but remember, they're doing oil analysis on those powerplants and there's always TBO (Time Between Overhaul) which you don't see on a car! Your also dealing with air cooled engines.