Practical guidance on viscosity, applications and technical documents, to help you make an informed product choice.
Two oils with the same SAE grade can have different performance specifications. Start with the vehicle manufacturer’s requirement, then check the current product information. A 5W-30 label alone does not establish suitability for a particular engine.
Further reading: Volkswagen engine oil and fluids ↗︎
STOU is a multi-purpose tractor oil for the systems specified by the equipment maker. UTTO is designed for transmissions, hydraulic systems and wet brakes where specified; do not assume it is suitable for an engine. Match the exact grade and performance level to the machine manual.
A technical data sheet describes the product’s performance levels and typical properties. A safety data sheet covers handling, hazards and emergency information. Ask for the current document matching the exact product before using the fluid or relying on a claimed approval.