Hi, I am starting to struggle with this one. 17 plate Vivaro is losing a lot of coolant but it isnt anywhere to be seen. So I guess I need to look at the heat exchangers in the EGR, oil and heater matrix. Has anybody else had a problem and can recommend where to start? I also have oil from the timing chain cover, Vauxhall have changed this 3 times so I will be sorting this at the same time.