INE YEARS AGO, Thomas Mendenhall of Suffolk, VA, bought a new Toro / Wheel Horse tractor with a Briggs & Stratton 15.5 HP engine and put AMSIOL 10W-30 Synthetic Motor Oil in it at the first oil change.

He used it to work one acre of land. "The oil was changed only every two years," Mendenhall reports. "It was always still clean at that time."

Toward the end of last summer, the motor developed a vibration. "Upon shutting down the motor, I found that all the oil had leaked out the bottom of the motor because the bottom housing bolts had backed out and let the crankshaft move about with the lower housing," he said.

He tore the engine down. "We found no damage from the loose housing but, more important, we found no wear on the piston or the cylinder," Mendenhall said. "The cylinder wall still had the original hone marks and, to my surprise, the inside of the motor was clean enough to eat off of."

He found all he needed was a $14 gasket rebuild kit and the tractor was back in working order.

Mendenhall was so impressed with AMSOIL synthetics he started using them in all his cars, trucks, boat, and motorcycle. He uses AMSOIL XL Extended Life 10W-30 in his 1969 Cougar XR; AMSOIL 10W-40 Synthetic High Performance Motor Oil in his 1994 Ford E-150 conversion van, along with the AMSOIL Dual-Remote By-Pass Filtration System. AMSOIL High Performance 10W-40 runs in his 1998 Chevy CK-2500 diesel, as well as in his 2003 GMC 2500HD diesel truck. His 1993 Intrepid 20-foot boat with a 5.0 Cobra motor runs smoothly with AMSOIL 15W-40 Heavy Duty Diesel and Marine Oil, and his 2003 Harley Davidson Ultra Glide runs with AMSOIL 20W-50 High Performance Motorcycle Oil.

"What a great product," Mendenhall said. "We wouldn't consider using any other product now. Thanks, AMSOIL."