78k? Sounds like tubes to me, I'd leave the chain be for right now, odds are it'll be fine untill 120k or so.
Early 119's tend to lose tubes and odds are everything else is just fine. If you cant fin all of the tubes, pull the sub pan and retreive them, I saw a 606 that pulled a washer through the oil pump screen and blew out the side of the oil pump. Even if the peice is large they can get them into the engine under hig volume demands.
Early 119's also have a oil pump housing chek valve issue as well, I cant remember the exact SI it was in but, it oughtta be easy enough to find. If your in the affected vin, do it.
Project Smoker, '87 603 powered wagon
Hauler, 96 CTD can you say torque?
Toy 73 Cougar xr7 convertible
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