I use 4 Oz. of Royal Purple 15W-40 synthetic motor oil and 2 oz. of Lucas Oil Stabilizer in both of my "S" model blowers.
Ed Springer
90 Black XR7 5-speed: 70mm TB, Fresh Air Intake, Upgraded '94 Supercharger, 5% SC Pulley, Raised SC Top, I/C Fan, Underdrive Pulleys, Headers, Magnaflow Muffler (no cats), 3:27 Gears, Ripper Shifter, 73 CL MAF, Magnacore Wires.
94 Red SC Auto: 70mm TB, Fresh Air Intake, Stock 90 SC Pulley, Raised SC Top, I/C Fan, Underdrive Pulleys, Headers, Magnaflow Muffler (no cats), 3:73 Gears, 73 CL MAF, Magnacore Wires, TRANSGO Shift Kit, Haydon Auxiliary Transmission Cooler.