Hi, I have a 2011 CR-V I-DTEC with 11,000 on the clock and I’m getting coolant coming out of the overflow pipe from the expansion tank. The car first did this last June about a week after being serviced when my wife noticed a ‘funny smell’ and upon looking around the engine I noticed some coolant from the overflow pipe. I thought that it may have been overfilled from the service and took out some coolant to the correct level. No more instances until late August after coming back from holiday after about a 300 mile run. Again coolant coming from overflow pipe. I again lowered the level to midway between the min and max marks and kept on eye on it. I had the main dealer check the car in November and they could find no fault and topped the coolant up to past the max mark. I left it here as I thought they should know the correct level. Nothing since then despite going on some long trips and holiday, until last week when my wife came back from about a 40 mile trip and on checking the coolant again it found it had overflowed. The overflow is not a great deal but enough to mark the rocker cover and drop down onto the suspension. It has done it again a couple of times since on local short trips but not to the same extent as I only noticed coolant at the end of the overflow pipe and not dripping down the side of the engine to the suspension. The garage has checked it again but still cannot find any fault. According to them ‘they have run it up to temperature and the fans come on at the correct temperature range and the temp drops back to operating parameters with no signs of any leak or overflow’. The car does not show any symptoms of overheating. The car gets up to temperature and the gauge sits at about two bars short of the mid way mark and does not rise. There does not appear to be water in the oil or oil in the water. It does not lose any water only when it comes out of the overflow pipe. The pipes from the expansion tank / radiator do not appear that hard when warm that would indicate the system is over pressured. If you did not know it was overflowing intermittently and looking to check it then you would not know there is an issue. The car does not do it every time ( I took the car for a 20 mile trip at the weekend with a mixture of fast roads and country lanes and no sign at all, but my wife did a shortish run on Monday and agian there was coolant at the end of the overflow pipe) but I can’t see a common denominator that may be causing this. Maybe the expansion tank cap, but why not every time? Help, any ideas ?