I was at the drive through oil change place, getting the oil changed in my wife's '99 Olds 88, 3800 series II cream puff. It was so hot, I got out of the car to stand in the shop.
A nice looking, shiny, 2000 or so Caddy Seville (or STS?) pulls up to the back of the place where you drive in. It's knocking heavily, smoking. There are 2 younger black dudes in it. It's got $2000 oversize rims on it. Instead of shutting it off, they sit there and idle it, waiting for the car up front to get done and leave the service bay. It's knocking away. So the service guy runs out there and tells him to shut it off! They finally get it into the service bay, and there's no oil showing on the dipstick. He asks the black dude "when was the last time you had an oil change?" The kid said "never." "How long you own the Caddy?" "about a year or so."
"Well, I'm afraid your engine is fried due to dirty, burned up oil."
"Yeah, that's why I brought it in to get it serviced. It was knocking loud. Can you fix it?"
"We don't rebuild engines here, sir."
"How much does that cost?................"
Let's see.....Northstar V8 rebuild or replace........um, not cheap
Instead of buying $2000 "bling" type rims, he should have bought a few oil changes. It amazes me how many people don't change their oil on a regular basis, if at all. That's why I would never buy a used car that doesn't have all oil change receipts. As for "well I did change the oil but just don't have the receipts", they don't sound too dependable (if they can't even throw oil change receipts in the glovebox) and probably did miss a few oil changes. Also, keep your receipts, helps in resale value.