Thank you BYprovider
It's aluminium we took a magnet. Somebody told me it came from the liner or cylinder but other told me I should not worry with a few particles.
The water pump it seems original and my plan is to change it also. I pressurized the coolant system and there is no leak at all. I am reading all I can and I am trying to run out the oul cooler first
Thank you James P. All the spark plugs are new only 100km, they just look all the same to us, no difference. We will runout the oil cooler. Also, I read that is quietly impossible to blow a head gasket but other people told me that it happens frequently. I do not know at the end who I should believe. The best bet would be to open the heads after the runout of the oil cooler
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