The proof was in the racing

From the start, Macmillan chose the most public proof of performance for its exceptional products — auto and air racing. In 1936, Macmillan produced the first three-time winner of the Indianapolis 500, Lou Meyer, driving "Ol' Number Eight," the "Ring-Free Special." During the same period, Colonel Roscoe Turner, internationally renowned air racer, used Ring-Free in his winning aircraft.

We maintained an active racing program into the 1980s, pushing new motor oils and high-performance gear oils to the limits in high-speed vehicles on the Bonneville Salt Flats and in endurance races at Daytona, Sebring, Watkins Glen, Ontario, and Bridgehampton. We assembled and raced the first international all-women racing team. Their records for consecutive endurance racing award finishes still stand at Daytona and Sebring.
 

Advanced Technology

But the demands for continually more advanced lubricant performance became increasingly challenging. As automotive engineers develop more sophisticated engine and transmission designs, we have to be ready with lubricants that meet or exceed requirements for the reduction of deposits, friction and wear. By creating partnerships with both suppliers and customers, we are able to anticipate the needs of the marketplace and meet design changes with the latest breakthroughs in lubricant technology.

The most advanced lubricants available today

What do OEMs demand from lubricants today? Exceptional high-temperature extreme pressure performance and superior protection against deposit formation — performance categories we invented in 1929. We kept our customers ahead of the times then. We do the same today with a complete line of lubricants, ATFs, and gear oils for passenger car, heavy duty diesel, industrial and two-stroke applications. These are the most advanced technologies available in proven quality lubricants. They are proud bearers of the legendary Ring-Free name.
But racking up records was never the goal of our racing program. This was our opportunity to prove Ring-Free lubricants among the best in the world under the extreme conditions of endurance racing. The race track was our testing laboratory.