quote:Amen. By 15k miles, you should be starting to see realistic, non-break-in wear.
Originally posted by Steve S: Unless you suspect a problem do an anylsis at 15,000 miles . I don't think there is much to gain by doing a uoa sooner.
quote:Thats Obsessive Compulsive to you Bud. Gene
Originally posted by Whimsey: I'd do the first UOA @ 10,000 miles. This is assuming that your last "oil clean-up" change was done at 5,000 miles and you then run 5,000 miles on the oil to the 10,000 mile mark. Before that if you sample you may not get a good reading because you're still "cleaning out the crud" till 5,000 miles. And it's a waste to sample until you run the oil to the OCI you want to use. Like Mikep I'd do the first oil change at 1,000 miles, the second at 3,000 miles and the third at 5,000 miles. Then the next one at 10,000 miles. But I see you changed the oil already at 300 miles . Three oil changes by 2500 miles is a bit excessive and a waste of money. Whimsey