Sounds to me like a set of seals would fix it. A involved DIY project but doable, I'd do a chain and upper guides at the same time, dont forget the tensioner. At that milage, the bottem end and guides should, notice I said should be ok.
Project Smoker, '87 603 powered wagon
Hauler, 96 CTD can you say torque?
Toy 73 Cougar xr7 convertible
Acme Automotive Inc.