Before download and install the mod Kassbohrer Tanker Trailer [1.35] at https://ets2.lt/en/kassbohrer-tanker-trailer-1-35/
Open the pack “KASSBOHRER TANKER SKIN”
Open the folder Kassbohrer/skinler then replace the file skin1.dds

Credits:
Original Mod: Harun Aras, Ahmet Lale, Emre Aydın, Halil İbrahim Bayırlı
Eni Italia Skin: Frank Melons