LPG fuel around the world...

[Lang]

I think the Canadian experiments look a bit like a dog and pony show operation testing an interesting concept in the early days of development.

Things have become much more scientific and everything is now built on well founded engineering experiments and millions of hours of successful real-life operation. I think if the Canadian experiments were repeated now just using off the shelf equipment that has been developed they would have very different results.

There is no problem using gas on modern cars because they have all the hardened valve components to cater for modern lead-free petrol and can handle gas OK. If you are worried there are plenty of lead replacement additives which can be used in the oil or in the occasional tank of petrol if you have dual fuel. The metering bottles from Moreys and others direct into the intake are supposed to be excellent.

In older engines gas will give you the the same problems as lead free petrol so the remedies are the same(hardened valve seats or lead replacement additives)