High Mileage oils have two additives that are suited for older engines. The first is a burn off inhibitor which helps prevent the oil from burning off if it gets past an engine seal into the combustion chamber. The second is a “seal conditioner”, designed to soak into seals such as head and rocker cover gaskets and force them to expand. Thus, if one of the seals is leaking, the seal conditioner will attempt to minimize the leak.

There’s no denying that higher mileage engines need special care. They have fought the good fight in traffic, at highway speeds, in extreme conditions, and they have done it for a long time. They are the road warriors, the engines that consistently get it done. As their internal parts and seals wear, they need added protection to keep them at their best.

The recommended lubricants for high mileage gasoline and diesel vehicles are Ultra Premium 20W-50 and Ultra Diesel Plus High Mileage respectively. These oils are well-designed and have been enhanced with a unique combination of conditioning agents and additives to helps stop leaks from seals and reduce oil consumption that is typical with older, worn engines.