As you pointed out Andy was using no lube or low lube.

Even castor won't help if it isn't there.

High friction would only be the case if there wasn't enough oil in place in which case what kind the oil is that isn't there won't matter.

In a car for example, if a bearing gets hot it is from not enough oil and then the damage is already done.

If your diesel has enough oil in it to start with then as far as I can tell you can't starve it of oil by running it lean because the engine will quit first.

I don't see the advantage of cator in a diesel yet- at least not for the price. In the long run I may learn differently the hard way....

Treven.