got back the worth of my kit in one year.. on two cars
enjoying profit now..
using petrol on long runs in loadshedding days and save cng for local.. perfect combination of fuel economy
used 3 cars on cng in my life.. kept em for more than 3 years each.. never had any engine trouble..
overall difference between pure petrol drive and cng drive.. specified to my usage is 8 thousand per month..
when i use gas cng combo my monthly fuel expenditure is 4k to 5k..
last month only used petrol.. expenditure went beyong 12k