Coolant lost during DPF active regeneration OCTAVIA 3 CKFC, 2.0 TDI 110kW 2013   Hi a have a problem with coolant lost. I lost every time whole coolant tank trough the coolant overpressure lid  - every 500 – 600km in one time. I changed lid, then also coolant tank to the new one – no effect. I found, that I lost coolant just when DPF active regeneration start – every 500 – 600km in one time. Engine have to be hot and I lose it during the trip. Temperature senso