Heins;

I should have mentioned that it is common for the supply pump to leak into the crankcase. It is driven from the IP and has direct access to crankcase oil the same as the bottom half of the IP. I believe it has a diaphram that can develope a leak.

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Mark
82 300SD 110k
91 Caprice SS
92 Jetta TD
97 Cadillac Concours(300hp)
84 Celebrity 4.3L diesel