Full oil system flow diagram for the 944, showing the path from the oil pan pickup through the pump, oil cooler, pressure relief valve, and to all engine lubrication points.
Procedure for replacing the front crankshaft oil seal on the 944, with part numbers by engine serial number, drive gear ridge inspection, and complete timing belt removal/reinstallation steps.
Documents the 1988 change from red to green oil cooler o-rings per Porsche Technical Bulletin 8813, with engine number breakpoints for the new-style o-ring installation across all 924S/944/944S/944 Turbo variants.
Covers the signs of oil cooler seal failure on early 944s, all replacement part numbers for integral and three-piece seal arrangements, alignment tool requirements, and the complete seal replacement procedure with torque specs.
Factory procedure for pressure-testing the normally-aspirated 944 oil cooler element at 0.8 bar (12 psi) in a water tank to check for internal leaks.