Leakage Points - With Transmission and Flywheel Removed

• crankshaft rear oil seal
• rear main bearing cap parting line
• rear main bearing cap and seals
• flywheel mounting bolt holes (with flywheel installed)
• camshaft rear bearing covers or pipe plugs at the end of oil passages

Oil leaks at crimped seams in sheet metal parts and cracks in cast or stamped parts can be detected when using the dye method.