ERRY CAMPBELL OF LINCOLN, CA works in the industrial laundry business, but he spends his free time riding his motorcycle in the Sierra Nevada Mountains. Although he has been a Honda rider since the age of 15, he recently bought a 2003 Harley-Davidson Dyna Superglide. "The biggest thing I noticed was that the big V-Twin engine runs hot," Campbell said.

He initially ran Harley SynTec 3 in his crankcase, Redline Heavy Shock in his transmission, and Redline 75W-40 in his primary chain, according to Redline technical services recommendations. "Well, the Redline didn't work any better than the Syn3," Campbell said. "In fact, my transmission shifted worse. The Harley SynTec ran too hot, and the Redline was sticky."

He remembered that years before he had used AMSOIL Synthetic Motor Oils, so he installed AMSOIL products in his new motorcycle. He runs AMSOIL 20W-50 Synthetic Motorcycle Engine Oil in the crankcase, AMSOIL Series 2000 Synthetic 75W-90 Gear Lube in the transmission and AMSOIL 10W-40 in the primary chain, and has installed an AMSOIL SDF Motorcycle Oil Filter.

"So, I've been running AMSOIL in all three cavities now," Campbell said. "It has made quite a difference. My engine is running at lest 30 degrees cooler, my transmission shifts much smoother, and my primary chain is quieter."

He said his engine had been running between 280 and 300 degrees Farenheit, and when the engine was cold, the transmission would grind when he shifted from neutral to first gear. "Not anymore," Campbell said. "Not bad improvements from just changing oils. I first used AMSOIL lubricants in the late '70s. I never should have stopped."

He's getting increased horsepower out of performance cams, he said. "This is really smooth. I've been a believer in synthetics since the '70s. I've seen the proof, I'm happy with the AMSOIL. The products seem like real quality products and if they keep my motor in my Harley running longer, I'll keep using them."