I was talking to a fella who came around to do some pest control, who has owned and worked on a boat load of cars, including a few 1200 utes. He told me about this product called Flash Lube and recommended that I run it in my Coupe.
Supposedly it helps protect the valve seals from burning out since it was built to run on leaded and we only have unleaded now which is a dryer fuel (something along those lines)
Just wondering if anyone else uses it, or perhaps you have heard of it but don't run it for some specific reason?

I used it with Lpg, not with current manifold though.
Some one will confirm but 1200's come with bronze or hardened valve seats that is ok with unleaded fuel. So no need to run it.

A-series engine have been designed to run on unleaded since at least 1970.

You don't want bronze seats. I believe the A12 seats are Stellite (cobalt-chromium alloy).

This stuff is rubbish I'm afraid, all it will do is leave deposits in the ports, the valves/stems and the combustion chambers/piston crowns. They advertise that (apart from protecting the seats) the stuff is meant to reduce gumming up of parts. quite the opposite occurs in practice.

I've run many many many engines on unleaded/lpg and they take _years_ for valve seat recession to become any sort of issue, so long in fact that the motor will have worn to the point of needing a freshen up (even if it was running leaded) - in other words, the valves and seats last long enough that people will run teh flash lube and think 'hey it lasted for years, this stuf is good' but in fact it would have lasted that long without the product at all.

Save your money, it won't do a darn thing for one of these engines.

Thanks for the replies. Good to hear from someone with first hand experience. I had a feeling it wasn't nesacerry as I have never heard of it before and my uncle who has been a mechanic for 20+ years and helped work on a few a12-15's never said anything about it.

Our family has been running lead supplement in all of our older engines, mainly Holdens, never had a problem.

A series engines are tuff as nuts. Never need any supplements. My A15 has been pulling 700km a week for the last 12 months with nothing but 95.