Oil additive SMT2

Looking for some input from those mechanically minded.
Chatting to the local 4WD garage today about our sons 60 Series in which the motor is getting a bit long in the tooth. As reco/changeover costs will be $5000+ he reckons his suggestion was to use a supposedly new product SMT2 or Synthetic Metal Treatment2. 10% added to oil at every change will do all sorts of things. Improved performance, reduced wear, improved fuel consumption etc etc.

I recall similar products from earlier days (Nulon??).

In the associate DVD they show an Australian Standard test rig that tests the friction/load carrying ability and the results are dramatic even to my eye.

Anyone have any experience/comments.

I reckon as long as it isn't likely to do long term damage it is probably worth a try??

And yes he does sell it himself.

Rusty