I discovered a massive oil leak(smoke) while pulling a camper on I294. I pulled off and was recommended to go to Certified. They let us plug the camper in to their shop, so food wouldn't spoil and moved us to the front of the line. They found the leak in an oil cooler line(Why would Toyota use a rubber hose for oil under pressure) sent someone down to Orland Park to get the part, and installed it. Vacation saved. They could have easily taken advantage of us, being 40 miles from home with 2 kids and a loaded camper, but charged us a fair price. Good Guys. Not easy to find. I marked it with a trail of oil from the Marathon station to their shop:). read more