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Info Centre >> Fuel and Lube Oil Technical Manual >> 3. Fuel Oil - Delivery & Sampling


3. Fuel Oil - Delivery & Sampling


Fuel Oil: Viscosity

Fuel oil, especially residual fuel grades, has historically been ordered by viscosity, although distillate fuels are often ordered by using other criteria.

Whilst viscosity is an important characteristic, it does not give an indication of the other characteristics of the fuel. With viscosity as the sole criterion for ordering, engine operators remain unaware of these other characteristics.

Fuel Oil : Characteristics

Similarly, the designers of the machinery and fuel oil systems are not always informed of the fuel characteristics to which they should be designing. It is therefore necessary to define the quality of the fuel over a range of parameters to which the engine plant is sensitive. Specifications exist to assist this process.

This section of the training manual covers the following: