Brad Penn Multipurpose Classic GL-4 80W90 Gear Oil 4 Pack Quart Bottles

80W90GL-4 Gear Oil. PennGrade Motor Oil. A specially formulated SAE 80W-90 oil designed for use with self-contained systems where a. Benefits of PennGrade oil Mono-grade oil with high levels of zinc (dialkyldithiophosphate) also known as "ZDDP".