- Change all standart scs trucks retarder sounds. - all trucks using different sounds. - some trucks using old voıth retarder sound some of new. - scania next gen and mercedes mp4 using voıth aquatarder. - ivecos using telma retarders. - daf trucks using different version of voith. - renault magnum and premium have different retarder sounds. - Man trucks using speacial version of voıth. - 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. - mod works for all scs trucks. - tested in 1.35. - have fun.