I've ordered a new cap from another dealer and went to pick it up earlier today.
They also topped the hydraulic oil from a plastic 1L bottle.
Guess what, the cap of the oil bottle is identical to what was put on my reservoir.
Just confirmed by Shell : the oil on the invoice for my 120.000km service isn't a Low-SAPS ACEA C2 oil as required for my engine with DPF !
Guess when the DPF regenerating issues started !
