I own a 2003 GMC Envoy v8. I just got an oil change 5 weeks ago - the other night as I was driving, the engine started ticking. I check the oil and to my surprise, the dip stick came up clean. I added 5 quarts of oil right on the spot then the ticking stopped. Why did this happen? This vehicle should not have needed 5 quarts of oil just after 5 weeks.

look under the car and see if the washer on the oil pan drain bolt is cracked or missing. else you may have another bad leak somewhere else, try putting a large piece of cardboard underneath and mark where the tires are so you can refer to where the spots of oil (if any) are coming from. look under the car and see if the washer on the oil pan drain bolt is cracked or missing. else you may have another bad leak somewhere else, try putting a large piece of cardboard underneath and mark where the tires are so you can refer to where the spots of oil (if any) are coming from.