My Audi has 190,000mi+ and never had to replace the cat(s). It has consumed about 1qt every ~2500mi or so since I got it in 2010. It has never gotten any worse. I've replaced the spark plugs and noticed no unusual fouling. And it still beats the EPA mileage.I agree, but a few reasons wrong/detrimental with a quart every 2,000 miles. You’re in danger of ruining your catalytic converters, no? I know oil can destroy cats, but I don’t know what the amount is. And fuel economy/efficiency...too much oil getting into the cylinder will reduce the efficiency and fuel economy of your car. Spark plugs can become fouled too. I guess you could also include the cost of oil, if you’re putting 3 quarts in a 6,000 mile oil change, you’re spending $12-15 bucks on oil between actual changes (Although that’s not a lot of money in the grand scheme of things).
But yeah, I agree. I think you can keep an oil burner going for another 100,000 miles with a little effort...and it’s a lot cheaper than another car payment.
So I think some of these things may be more of an issue
a) In theory
b) with more extreme consumption
For me, it's an extra qt 1/2 way through a 5000mi OCI. Which is very manageable