On the response to oil, some stuff I swear by is Justice Bros. Oil Treatment aka J-B Brand. The place I buy mine from also swears by it. You can't buy it from a chain store (Advace, Auto Zone, O'reilly's, etc. etc.) only from independant dealers or small shops. It's an additive, not a replacement. You add to your existingamount of oil. This stuff bonds and conditions the metal.
Just my .02. Good luck on your search.
I just purchased an 86 swb check it out here.
http://67-72chevytrucks.com/vboard/s...d.php?t=190603