Good afternoon, we have something about 30 trucks. Among other things, we transport liquid products, but also pallet goods. So about 10 tank trains and 10 tarpaulins and 10 solo with tarpaulin. Now we want to buy ne 40t combination with 3 axle trailers with SZM for liquid tranport. Later there will be another SZM, with cityliner for pallet goods. both SZM will be identical. Now to the question, on what must I pay special attention (in comparison to trailer trains)? Teflon or grease plate, Pro/ Contra? Needs a retarder at the Scania? With the 40t suspension trains we have it so far? Does the engine hold enough without? Oh yes, come from Switzerland, so sometimes downhill rides.