Petron STOU
PETRON STOU is a high performance Super Tractor Oil Universal (STOU) designed for use in high-speed four-stroke cycle diesel engines used both on heavy-duty on highway and off-highway applications (up to API CG-4) as well as in transmissions, final drives, wet brake and hydraulic systems.
It is specially formulated with high quality base oils and additives to meet the requirements of STOU.