My friend has a 97 Neon with 101,600 miles. She drives 400-600 mi. a week and is using 1 or 2 qts. of oil weekly. No oil drips on ground; no smoke is visible from exhaust; valves don't knock. She has oil changed every 3,000 mi. Does anyone have an idea what can be going on? Car is running good now, but could she be facing a breakdown? She must have a car for work. Should she look for a new car? Thanks for any help you can give!