Replacement of antifreeze is done during maintenance, and with your own hands. When replacing it is desirable that there are no animals and children nearby. Remember that antifreeze is toxic. The engine should not be warmed up, know that if the engine is hot, it is dangerous to do it. Remove the radiator lid, open the drain cover. Antifreez merges into a substituted bucket, and not to the ground or where else. When you salt the old antifreeze, examine all the hoses, check, maybe there is damage. If you find damaged, replace them. Further, the system must be washed so that rust, fat and other deposits come out of the system. Rinse the system with a special liquid, it is sold in bottles. Pour the entire bottle, add still demineralized water there, the system should be filled to the edges. Close the lid, then start the car, turn on the stove to the maximum. We heat up the car to the operating temperature. Next, turn off the engine, wait for the cooling. After the engine has cooled, we open the radiator cover and drain this liquid. You may also be interested in the optimal price. This is not all, now you need to pour ordinary water and start the car again for 15 minutes. Next, let the engine cool, again drain the liquid from the system. And now the turn has come for filling a new antifreeze. Do not forget to read the instructions and recommendations of the manufacturer for pouring antifreeze, on the package. The instructions must be followed. Attention, the optimal ratio of antifreeze with water should be 50/50. There can be more antifreeze, but not more than 70%. As soon as you poured, turn on the engine and the stove (as much as possible), this will make it possible to evenly distribute the antifreeze through the system. If the system remains in the system, it must be removed, this is done as follows. We traveled for several days, checked the level of antifreeze, if it is slightly reduced, bring to the right one and so several times.