Question asked by a reader: I have a 1998 Ford Expedition with 150,000 miles. During the past two oil changes, she was told that there was no oil on the dipstick. They then removed what oil was remaining in the engine, and replaced it with five new quarts. She had the oil changed about six weeks ago, and I just checked it myself before we went on a trip. The dipstick had no oil on it, and it took four quarts to get it full again. I have checked the ground where the truck is parked and there is no oil. Additionally, there is no oil, smell or smoke from the exhaust pipe. Where is the oil going, and what should I do?

Answer: Simply put, your engine’s worn out. If there’s no oil under the truck, then you’re burning it. If you stand near the tailpipe when your wife starts it up in the morning, you’ll almost certainly see a puff of bluish smoke. It may be harder to see once you actually start driving, but it’s there. Trust me.

You have a couple of choices. One is to install a rebuilt engine or used engine. If the truck otherwise is in very good shape, and you want to keep it for another 50,000 miles, that may be a good option.

Make sure to have your favorite mechanic check it out from bumper to bumper, as if you were buying it as a used car today. You don’t want to spend $3,000 on a rebuilt engine and have the problem reoccur if an underlying issue such as an overheating problem helped caused the failure. And with 150K on the odometer, that’s a distinct possibility.

If after an inspection it is decided that the engine needs replacement, than depending on how much mileage you want to squeeze out of  your truck, you can decide what option fits you the best. If you are looking for an extra 50,000 miles, a good used Ford engine is the perfect solution.

Speaking with a professional engine replacement expert @ GotEngines.com may be in your best interest. Call 1-888-344-8044 and find out what option suits you best. Good luck.