No facts to add but I would tend to agree there are plenty of other areas that can use the help still. How much is needed? I don't know. I swear years ago before anyone talked of this issue I read an article on the down sides of too much zddp. But this was centered around additives like GM EOS. Now I run this stuff Cenpeco and have mentioned it here a few times but nobody knows it exists

Fwiw I think Carl Hinkson (CNC blocks northeast) from speedtalk is a fan as well. A pretty sharp fella as I recall.

And I doubt Jesel is in bed with the oil companies! That is some conspiracy

Don't take any of it personally it's an online (fantasy world, where people don't act as they would face to face) message board. We're all here to learn right?