How would one even do an oil analysis? Are there places that do it for free? I'm in Chicago BTW. I have a 96 camaro with about 100K on it. I used all kinds of oils. I'm thinking of switching to Maxlife also. I would be happy to do an analysis of it, if there is a place near me that does it. I'm on Mobil blend 10W30 right now. Thinking of getting AutoRx, then using Maxlife from then on. Car has no leaks whatsoever. Runs great. I've been beating on it good, but always changed the oil every 3-4K.