No little tubes that I saw with the valve cover off. The cam must be lubricated through hidden passages in the head? Noticed some carbon was filling the heads of some of the allen hex bolts, though. I have a copy of some instructions on the tensioner, and it says you have to remove the air pump. I am worried about having to replace the serpentine belt tensioner if I disturb it, as warned by the helpful Steve Brotherton article. So I am not too worried about the chain tension yet. Has there ever been problems that are limited to the chain tensioner and it's spring breaking? Or is the tensioner something you really needn't mess with until timing chain is replaced?

I picked up some Delvac Super 1300 15W-40 (for diesels, this was the last of the older kind that didn't say "low emissions" --extra detail for the oil people) to try. She mentioned upon further questioning that she had Firestone change the oil. So who knows. Also purchased some Seafoam but not sure about using it due to some skepticism online. Wouldn't it be safe to use as long as you don't heavily load the engine or rev it too much? If the oil is already in good shape, would using Seafoam in the oil be acceptable like it claims on the container?