Pontiac 2000 Bonneville LS
Engine oil usage
My car blew the engine. I had 2 options: buy a new or used one. I chose new from GM w/3 year warranty. Dealer says we need for them to change the oil because wrong oil usage could cause warranty to be invalid. They also said the engine could use 1 to 2 quarts of oil every 3,000 miles. I have had GM ...