Hi, I am looking at getting my hummer h2 2005 model fitted with lpg has anyone got an idea of mpg I would achieve please thank you

 

Should the response refer to Martin or Mr Wood?

 

Martin is fine

 

i think @oceanbrave uses lpg on his h2 he might have a better answer

 

Thank you for your help I have tried to message them but it won’t allow me too if you can or if they see this post please could you reply thank you

 

he pops in very often. i am sure he will respond. very knowledgeable guy like many here.

 

Thank you for your help I have heard different mpg so before I purchase the Car and install lpg this information will be helpful

 

Martin, HUMMER H2, is not a "Car". The Hummer H2 is a large SUV that was marketed by Hummer and built in the AM General facility under contract from General Motors from 2002 to 2009.

 

@Martin wood
Ah I see you're in the UK too, not whereabouts in the UK you are, FYI I'm south of Birmingham, welcome to the forum

hummerz is quite correct, my "Car" AKA SUV runs on LPG (in the UK we tend to call everything cars as you know)

This will make you smile, I looked-up my reg on Birmingham and London "Clean Air" charge zones, guess what, my H2 is exempt, presumably because it's LPG !!!

So the key things :-

• There's no noticeable difference performance wise.
• The same amount of litres is used whether running on LPG or Petrol (saying gas just confuses everyone) so the saving is directly related to price.
• LPG prices fluctuate, last year LPG was half the prices of petrol which means a huge saving (double) This year, not so good (89p)
• For LPG it's important to have a valve saver system, like FlashLube, as LPG has no additives which the valves need.
• Engine experts claim that you need to run on petrol some of the time, however I suspect this applies if there's no FlashLube, also you'll find the H2 still uses some petrol (starting etc)
• All LPG vehicles must have a petrol tank because you cannot start on LPG alone. The liquid gas is warmed by a vapouriser which in turn is heated by the coolant system. So liquid propane gas 1st needs to be vaporised. Also you can't carry (easily) a reserve LPG supply in case of a breakdown.
• If installing LPG it's best to have a "4-Port" tank rather than a twin-port. 4-Ports fill faster and I can tell you standing in the cold waiting to fill-up is not fun!
• Switch over between fuels is automatic, the H2 starts on petrol then switches over usually with 1/2 a mile or sooner when the engine is warm. There's no "blip" or perceptible hesitation as the fuel switches, also you can disable LPG operation at any time.
• For MOT's my H2 never registers an emission particulates, it's always very clean.
• The FillLPG app is good for the phone, it tell's you where all the Autogas stations are and their prices.

On the down-side LPG is getting scarcer, make sure you have 1 or 2 local supplies.

When the prices is right on long journeys' I can get 30mpg (that;'s UK gallons not US)

So that's the quick info immortalised forever on this forum

 

Thank you for your help with this, I read on another h2 forum that lpg gets you 22mpg and as I do about 30 miles a day for work and am looking to use this as my everyday runaround if I am getting 9mpg it would work out to expensive I really hoped I would be achieving 20-22mpg to make the purchase viable