[Dave at Pelican Parts]

I think there was some confusion about the #1/#3 thing.

The crank (and therefore the fan) turns twice for every one rotation of the cam. So when the "TDC" mark is at the top, you can either have #1 or #3 at TDC, ready to be adjusted. Not both at the same time. And #2/#4 are similar.

I recommend Swepco, as it has been recommended to me by several pro mechanics that I trust. (Pelican also sells it.) However, there are others like Dr. Evil (noted 914 transmission rebuilder) who say that cheap dino oil is just as good or maybe better--and that it should be replaced every couple of years no matter what.

--DD