I've run about 700kms on my 2.0 CR-V (AT) since it was converted to LPG 2 weeks ago. I did not change the installed Denso Iridium plugs (heat range 20) which has been on the car for about 15K kms already. So far no problem and my city FC is 6.38 km/L over several full tanks. Perfectly happy with the set-up.