The new Aurion system is a direct injection system and the cost is $4400 !!! So that's at least $2400 out of pocket if the subsidy stays the same, and the amount of kms I do every year it would take me about 3 - 3.5 years to break even...and I didnt even factor in the extra service costs of the system...lemme guess 150 - 200 every 20,000 or so at least, no way this is looking even close to worth it for me personally. I was kindof aware from experience of the extra wear on valve seats and higher running temps etc, but was prepared to ignore it (aka put in the back of my mind) but it still is a factor. You read all the propaganda from the LPG places saying it's better for your motor as it doesnt wash oil from cylinder walls etc etc...but they dont mention anything about the valves seats do they hehe. Nah my mind is made up...if it paid for itself in 6 months then I'd seriously consider it but I may not even have the car for as long as it's gonna take to break even (planning on keeping it for about 10 years but you never know).