[QUOTE=fahadwizz;4378520]Damage to the valve seats and higher burning temperature of cng will eventually lead u into overheating problems. It sounds awesome to drive a civic with such low fuel cost (cng) but the pleasure is destroyed due to constant shifting of gears especally if u r driving in rush hours. The constant gear shifting will also heat up the transmission and reduce its service life.
THats the reason I dropped the Idea of getting a Civic prosmatec which would run on GNG
He told me that after approx every 15 months you will have to change gearbox or cluthc plates etc due to heat up issue and gear shifting issue due to power fluctuation with CNG.