
Muzat is a Vicious, Dark and Heavy Fuel Oil (HFO) used as a form of commercial fuel. It is mostly used in generating power for factories. It is almost exclusively manufactured in the Kazakhstan, Azerbaijan, and Turkmenistan. The most important thing when grading this fuel is the sulphur content.
Mazut-100 is a fuel oil that is manufactured to GOST specifications, for example GOST 10585-75 or 99. This product is typically used for larger boilers in producing steam since the BTU content is high.