Quote:
Originally Posted by Lang
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)
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US military tests concluded that as long as you run any engine below 3,000 rpm, valve wear will be insignificant compared to running it on petrol. It's only at higher rpm's that valve wear can become detrimental in engines without (hardened) valve seats.
H.