6.2. System of decrease in toxicity of an exhaust
All models have various built-in elements of fuel system which help to minimize issue, and all models have, at least, system of decrease in toxicity of an exhaust. Models with the catalyst are also equipped with control systems of release of vapors of fuel and an exhaust.
All models use the 95th unleaded gasoline, but the following early engines use the 97th ethylated gasoline: TU3 (K1A); TU3A (K1G); XU92C (D2D); XU9J2 (D6A); XU9J4 (D6C); XU52C (B2A). However it is possible to use unleaded gasoline if to reduce a corner of an advancing of ignition on 3 °.