ive got a very strange water loss problem.. i can fill it up to the max mark then drive 30/40 miles stop and check it and its on the min mark... no signs of water dripping any wear, no mayo on oil cap, runs fine, temp staying on 90, BUT when i stopped to check it i saw steam coming from bottom of expansion bottle so i toped it up left cap off expansion bottle just to see if water level dropping but then after about 10 secs with engine running the water level shot up and pissed all over the bottle. please help, if you can as im going on hols soon with it...
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