New products and press releases
American Refining Group (formerly the Kendall Refinery) has gear oil for vintage transmissions and gears.
Made from 100 percent Pennsylvania crude oil, Brad Penn Penn Grade 1 “Classic” GL-4 SAE 80W-90 Gear Oil is especially formulated for use with “yellow” metallurgy – brass, bronze copper and other “soft” metals used in synchronizers, bushings, thrust washers and other transmission components. ARG claims that where GL-4 is specified, a GL-5 lube with higher extreme pressure additive concentrations can damage soft metal components. $4.95/quart.