No, it is don't have methane.
METHANE
Methane
1270 Liter Methane is equal to One KG LPG
methane and butane methane and Ethane
Methane is CH4 and LPG(Butane) is C4H10. The energy in the Carbon Carbon bond (C-C)is more than that in the Carbon Hydrogen bond (C- H). Since there are more number of C-C bonds in butane (LPG) than in methane,calorific value of LPG or butane is higher than that of methane.
LPG contains propane and butane LNG contains methane
The main elements of lpg are, butane , methane(CH4) and etyl mercaptan.
LPG is the abbreviation for Liquefied Petroleum Gas.The property used is its inflammability for use in internal combustion engines
Propane, LPG, or natural gas (methane)
LPG - liquid petroleum gas
For a comparison with methane see the link below. LPG is not considered as an ideal fuel, the ideal don't exist.
(a) methane (b) ethane) (c) propane (d) butane