If the motor used so much oil that it ran low a couple of times in 10k miles I'd say you have your answer; You're burning oil! Of course you might be running rich as well. Is this the truck with the Webber carb?

When my '84 22R had only 65k miles it used a half a quart of oil every 3000 miles. Those were the good old days. --- Matt



you have to add oil so often that you sometimes let it get a little

'89 4runner SR5, 3.0, auto (fun)
'93 xtra cab, dlx,3.0, 5spd (work truck)