Sadly no input, but to any who it might concern - the torque was pretty much gone.

However the actual problem was that the heat exchanger (radiator) got busted and the gearbox had coolant in it. Needless to say a full rebuild will be required

I should've replaced that piece of crap along time ago, lesson learned the hard way.

Can the colder thermostat be the reason for higher pressure?? This happened right after the install of a 90C thermostat from the 7 series diesel (original BMW and brand new, direct fit)? Is it just a coincidence? I'm going mad with this car

Any thoughts appreciated

Best regards