Well I took your advice and ran 40 weight oil with an extra 2 quarts of desiel . Backed the truck out of the shop and ran it for a half an hour . I'll be honest I had high hopes but did'nt really think it was going to make a difference, When in fact after about 20 minutes it started to smoke a lot less!! After running it for a half hour I pulled it back in the shop, changed out the oil with fresh 10-w-30. Then today I took it for a ride and noticed a little puff when I clutched it between gears but nothing like it did before. I thank you for the tip and am looking forward to fun summer of riding around our country roads with the old parts truck.

above all this old truck has taught me patients!