Thanks, that seems to confirm what I have been told. I have recently put an additive into the oil & also the petrol. It now appears to run on petrol without problems. On LPG it is still missing, or variable. I didn't know that there was a specific oil for LPG, but I'm told that there is a 'lubri...

This vehicle has an LPG conversion. Recently on starting it has been misfiring (on most cylinders) first on petrol & the when it switches over, on gas. After a time it usually cures itself & runs OK but it appears to be getting worse. I have been told that because it has the LPG conversion t...