Which is better ?Diesel or Petrol/LPG for fuel economy

Discussion in 'The Beginner' started by Jask, Sep 29, 2011.

  1. Jask

    Jask Read Only Funster

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    I'm thinking of buying an American RV .Being a truck driver i have all way's favored Diesel engine vehicles .I have been told by a few ppl that petrol/Lpg Rv's are a better option .Why is this the case .I would have a thought that if you intend to do alot of mileage then Diesel would be the best option .Any advice would be much appreciated .:Smile:
     
  2. Snowbird

    Snowbird Funster Life Member

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    Depends on were your traveling to. LPG is not much use in Spain as its difficult to get hold of. In North Africa its impossible. If your a HGV driver you don't need me to tell you about the longevity and reliability of a large oil burner.
    Am a lover of the diesel engine as I understand it. Too many electrical components to go wrong on a petrol engine for my liking. Having said that, Each to there own. Cummins has always been king in my book and always will be.
     
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  3. chatter

    chatter Read Only Funster

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    the only reason i can think off well 2 reasons
    1. lpg is cheaper than petrol or derv
    2. run on lpg in london to avoid the lez so i have been told
     
  4. Sundowners

    Sundowners Funster Life Member

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    Hi
    the smaller RVs don't often come with diesel motors---so petrol/lpg is only option with them.
    American diesels are not THAT good on fuel-------LPG conversion is expensive---AND has more electronics to go wrong.
    I love diesels (especially Cummins)----so, for me if it didn't run on diesel,
    I'm not interested.
    We have run Range Rover/Discovery/V8 Landrover on LPG, so have some experience of it, fuel is taxed less than petrol, so running on LPG can be cheaper (when we ran the Land Rovers on LPG it was cheaper than similar vehicle on diesel)
    If getting a vehicle converted to LPG------fit the biggest tanks that weight/space allow-------or you may go off your intended route to keep on lpg--------and torque is normally higher with diesels
    Also when abroard, diesel is everywhere

    BUT FOR ME IT'S GOT TO BE DIESEL
    Nigel & Pamala
     
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  5. Larrynwin

    Larrynwin Funster

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    As you are a truck driver you will be able to choose from RVs above 7500kg and move into the area of diesel pushers which could be a better option although there are a couple of new RVs on the market with front end diesels, the earlier front end ones are generally based on the Chevy 6.5l V8 turbo diesel.
    You may get more experienced advice on our sister site www.rvoc.co.uk which is dedicated to RV owners

    Larry
     
  6. motorhomelover

    motorhomelover

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    we have a chevy 7.4 V8 RV with LPG
    we get 10miles to 5Ltrs of LPG
    and about 15miles on petrol

    its a no brainer LPG @ £0.70/LTR = £0.35p/mile


    a house on wheels with air con central heating bath shower and full size bed
     
  7. Snowbird

    Snowbird Funster Life Member

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    Jeez these new Chevy petrol engines must be good. Last 6.5 I had in a pickup truck wouldnt do more than 12 MPG...I could even get it down to 6 if I tried.
    Wheres Buttons tonight???:Wink:
     
  8. motorhomelover

    motorhomelover

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    yeah its fitted in a 25foot georgieboy pursuit nice 4 berth RV
     
  9. pappajohn

    pappajohn Funster Life Member

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    Diesel is more efficient than petrol.

    Petrol is more efficient than LPG

    but LPG is far cheaper than Diesel or Petrol.

    £ for £ you cant beat LPG :thumb:
     
  10. Snowbird

    Snowbird Funster Life Member

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    Last time I checked was getting 14.7 out of my Cummins fully loaded and with a toad hanging on the rear.
    That was pushing it,and I wasn't hanging around. It was on a return trip to Eurodisney from South Manchester.
    Solo it will do 16 with the cruise set at 65 MPH.
    Solo with the cruise set at 55 17.5.
    Havnt pulled these figures out of the sky. Its been checked over many thousands of miles. Am used to checking fuel figures, as a drastic drop in fuel economy is the first indication of mechanical failure.
    Am not cynical, sceptical, or stupid....have had to many Yanks for too many years to be either.:Wink:
     
  11. johnp10

    johnp10 Funster

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    I think it boils down to what you have at the moment. For me it's diesel, but never used LPG.
    I get good fuel figures from my 2000 Ducato on diesel without the chipping business.
    Availability of fuel must come into the equation: I dont know of a fuel station that doesnt sell DERV, but I dont of know of many that sell LPG.
    Also, not being a technician of any quality, repairs must be considered.
    Basic diesel engines can, in the words of Mr. Hilldweller "Be fixed by a blacksmith".
    I dunno about gas systems, but is this the case?

    Open minded, no intention of farting about with LPG. DERV suits me at the moment.
     
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