Capacities 369 Technical data Z Capacity approximately Service product (Sheet Number) Battery cable terminals Acid-proof grease (350.0) Fuel tank U 216 / U 218 / U 318 / U 423 K 145 l Diesel fuel (131.0, 137.0) (Y page 364) Optional equipment: U 318 / U 423 200 l U 423 L / U 427 / U 430 200 l Optional equipment: U 423 L / U 427 / U 430 250 l AdBlue® tank U 216 / U 218 18.0 l AdBlue® (352.1) U 318 / U 423 / U 427 / U 430 25.0 l Windscreen washer system 15.0 l Windscreen washer concen- trate (371.0) Air-conditioning system Refrigerant compressor 0.16 l Compressor oil Refrigerant circuit 1400 g Refrigerant R134a (361.0)