3k what don’t you use synthetic, mine says like 10k miles.

But I have an old junk car with a slight oil leak anyway, so I’m putting like a quart in a month, and it only holds four quarts, so I got a natural continual oil change going on.

That’s what GM tells the dealers to recomend. Should be full synthetic Dexos only. If you check your oil level regularly as you should you can go by the oil minder in the cluster to tell you when to change it. But with all the oil driven components low or dirty oil causes issues. I would go with the 5000 if it was mine.

Full synthetic or conventional it don’t matter, I still change mine at 3,000 MI because especially if you have one of those extended car warranties they’ll look at it, and they go no you’re not changing it enough.

3k

Recommended Oil change intervals are only designed to get you out of the warranty period, not for the longevity of the vehicle. The manufacturers and dealer’s jobs are to sell you another vehicle.

Manufacturers have changed to lower tension piston rings to decrease friction, but it also increases oil consumption and blowby. No way in hell would I go 5k miles or more without checking the oil level every 1,000 miles, or rely on the built-in oil life monitor.

If running full synthetic you can easily run 5k. Just keep an eye on oil level if it eats oil. If conventional oil, you can push it 3-5k. Again keep an eye on oil level.

If it has only had synthetic oil, 5k is fine. If it has ever even had one quart of conventional oil. You should start planning the change at 2500 miles.