Has anyone ever sent an oil sample to a lab for analysis? I sent some from my oil change this past weekend, just curious how these engines wear internally. I know it burns oil but a friend of mine who has been working at a Chrysler dealership for almost 25 years tells me this engine was notorious for that.

1989 Dodge Raider V6
2001 Jeep Wrangler 4.0L
2008 Toyota 4-Runner SR5 4wd