- Change all standart scs trucks retarder sounds with real ones. - All trucks using different sounds. - Engine brake sounds adjusted. - Some trucks using old voıth retarder sound some of new. - Scania next gen and mercedes mp4 using voıth aquatarder. - ivecos using telma retarders. - Added new voıth sounds for d38 Man trucks. - New volvo using gen 2, old volvo using gen 1 voıth. - This mod add new engine brake sound for MAN TGX EURO6 and MERCEDES BENZ TRUCKS. - You can support me to doıng premium donwload. - Have fun.