Imagine buying a Cadillac, Chevy, or GMC for its fuel efficiency—only to find out a recall fix could make you spend way more on gas. A new lawsuit claims GM’s solution for a major engine defect is just switching to thicker oil, which could drop your MPG by up to 4%. That means hundreds of extra gallons (and dollars) over your car’s life. Would you be cool with paying more at the pump to avoid engine trouble? #GMRecall #CarNews #FuelEconomy #ClassAction #AutoTalk #Cars