WARNINGS Burnt smell of oil is a sign of contamination with fine particles as a result of wear of the friction linings controls the automatic transmission. This should alert you, because you may need to overhaul the transmission. If the level of oil in the automatic transmission is lower than normal, the oil pump starts to flow air, leading to the formation of oil foam. This in turn will reduce the operating pressure in the control system, sliding friction controls transmission and delay shift. If the oil level is larger than normal, as a result of rotation of the planetary gear mechanisms also start copious foaming, resulting in the same effect as in the case of a low oil level. Forming a mixture of air and oil eventually will cause overheating and oxidation of the oil, which would adversely affect the operation of valves and friction elements control. In addition, the foam will cause increased emissions of oil through the breather that can be mistaken for oil leakage from the system. | 
