Specially formulated 100% synthetic, SAE 75W-90 oil suitable for use in Roots and Lysholm Screw type superchargers. May reduce overall oil temperatures by as much as 15°F over conventional gear lubes resulting in longer component life, less drag and more horsepower. Unique formulation offers excellent antifoam characteristics. May be used in manual transmissions and hypoid differentials where high shock loading is a concern. Size - 1 Quart PennGrade 1 Full Synthetic Hypoid Gear/Blower Racing Lubricant is a specially formulated 100% synthetic, SAE 75W-90 oil designed for use with self-contained systems where SAE 75W, SAE 80W-90 or SAE 90 grade gear oils are recommended. It is suitable for use in Roots and Lysholm Screw type superchargers and may be used in manual transmissions and hypoid differentials where high shock loading is a concern. PennGrade 1 Full Synthetic Hypoid Gear/Blower Racing Lubricant may reduce overall oil temperatures by as much as 15°F over conventional gear lubes resulting in longer component life, less drag and more horsepower. This unique formulation offers excellent antifoam characteristics as measured by ASTM D892 and meets or exceeds the following performance requirements of MIL-PRF-2105E, SAE J2360, API MT-1, API GL-5 and Mack GO-J