LPG or twin tank systems...
I run an LPG (propane) system. How does Fuelly cope with a twin tank set up?
Well, Fuelly seems to cope quite well! In the UK Propane is half the price of Petrol (gasoline) but your engine burns more of it (about 20%). So what I want from fuelly is a cost per mile figure that allows me to compare to other vehicles, rather than focusing on MPG which will give the wrong picture totally.
Now any car with an LPG system will burn normal petrol. It is required to warm the engine before switching over to propane and if you run out, the system reverts back to petrol. So, despite the limited use, I need to know the usage of both fuels to fully understand what my vehicle is costing.
What is the best way of doing this? Currently I have been recording every full up, but I tend to fill both tanks at once when the petrol gets low. this means I input 2 fuel ups on the same odometer reading with different price per litre. I have found that I input the propane first then the petrol, it seems to disregard the 0mpg of the petrol fill from the average mpg, yet still contributes to the overall cost. This it what I am interested in knowing, but is there a better way I could be doing this?
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