No paper certificates on LPG conversions nowadays they need tp be registered here:http://www.drivelpg.co.uk/advice-and...icle-register/. Last one I had registered cost £50 for the inspection.

Registration with DVLA gets you a whopping £5 off VED, but as said it's not necessary.

Normally driving you should barely notice the power difference on LPG on a big engine, but MPG will be down, my Disco does 17-20 on the hard stuff and 15-18 on LPG, driving it sensibly, I can get it down to single figures.

Bill

Looking for a Sierra P100
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13 Nissan Juke 1.5 dci / 02 Discovery II 4.6i V8 Adventurer Auto LPG / 88 110 County SW 2.5TD / 62 Series IIa 88" truck