How often should a 98 mitsubishi gallant go for oil and filter change?

if using regular oil (high mileage 10w40) I would say 3,500 miles max.How often should a 98 mitsubishi gallant go for oil and filter change?
The older the car, the more it uses oil especially on Mitsubishis. Check your oil after 1000 miles and see if the oil level drops. If so, it is burning oil than normal. I suggest to change your oil at 3 months even if it is less than 3000 miles. If it's not, then 3000 miles is the ideal mark.How often should a 98 mitsubishi gallant go for oil and filter change?
Depends on your driving habits. If you regularly drive it on the freeway for at least 20 minutes at a time, you can get away with changing the oil every 6,000 miles. But if most of your trips are short jaunts around town, or if you do mostly stop-and-go city driving, best bet is to change your oil every 3,000 miles. That'll make your engine last longer.
you can drive 3000 to 7000 people that sell ooil would like you to change every 3000 miles but you can go mush farther
My rule is 3000 miles, irregardless of how long it's been. If you only drive 1000 miles (highly unlikely) in 3 months, it's not due like some garages suggest. Keep the 3000 mile rule, and you should have a cleaner running engine. Be sure to use oil that is applicalbe to your surroundings and drive conditions.