1968 Plymouth Barracuda Eclipses 400K Miles With AMSOIL

Editor’s Note: Much of this story first appeared in the November 2010 issue of Hemming’s Classic Car. It was written by Editor-in-Chief Richard Lentinello and is excerpted by permission.
Phil Garner, of Hopewell Junction, N.Y., still drives the Plymouth* Barracuda* he purchased new in 1968.
More remarkable, the car runs on the original engine. In August 2010 the odometer read 438,000 miles (704,900 km).
Garner said the reason the engine has lasted nearly a half-million miles without requiring any major work other than a valve job is because he has been using AMSOIL synthetic motor oil since the mid-1970s. “I understood AMSOIL was one of the best products out there,” Garner said. “It seems to be true because the inside of the old 318 (cubic inch V-8) still looks clean, with no varnish or sludge anywhere.”
He uses AMSOIL 20W-50 Synthetic Premium Protection Motor Oil. He relies on AMSOIL SEVERE GEAR® 75W-140 Synthetic Gear Lube for the four-speed transmission and differential.
Garner said the car’s quality construction coupled with consistent maintenance have kept the car running smoothly.
“Not much has gone wrong with the car; it just keeps on running. I just keep after things,” he said. “I change the coolant ever year, and every 100,000 miles (160,000 km), I automatically rebuild the carburetor and have a local electric-motor repair shop replace the brushes in the alternator; at the same miles, I replace both the water and fuel pumps to prevent breakdowns. At about 350,000 miles (563,000 km), I replaced the timing chain and performed a valve job. The brake rotors have been in the car for 42 years now, but the rear drums have been changed once and the lower ball joints have been replaced once, too, although I did have to change the clutch three times.”