What is the pour point of diesel fuel?

Measurements have shown that diesel fuel has a Pour Point of –30 °C which is common for arctic diesel in the rest of the world.

What can be used as pour point depressant?

Alkylaromatics and aliphatic polymers are two types of pour point depressants that are commercially available. Most commercially available pour point depressants are organic polymers, but nonpolymeric substances such as phenyltristearyloxysilane and pentaerythritol tetrastearate may also be effective.

What does pour point depressants do?

Afton pour point depressants can help a wide range of base oils function at lower temperatures while retaining viscosity benefits at higher temperatures. The pour point is the lowest temperature at which an oil or fuel will pour when cooled under defined conditions.

Why are pour point depressant type additives used in lube oil?

Pour point depressants are polymers that allow oil and lubricants to flow at very low wintertime temperatures without heavy wax formation at these cold temperatures and enable the oil to remain pumpable (flowable).

How are pour point depressants used in diesel fuel filters?

Pour point depressants can also reduce the size of wax crystals, but not necessarily to a size where they will pass through a vehicle fuel filter. Fuels are normally treated with pour point depressant at the refinery. Operability additives are designed to improve the filterability of diesel fuel through diesel fuel filters at low temperatures.

Why do you need a pour point depressant?

Pour point depressants are used to lower the pour point temperature of the lubricating oil beyond the starting temperature of the engine. Cold flow additives called pour point depressants can help avoid ‘frozen” lines, but once the tank or lines have frozen or waxed other solutions are needed. The best solution is to top off the tank with kerosene.

How does pour point depressant affect wax crystals?

They co-crystallise with paraffins coming out of solution as a fuel cools and disrupt the structure of the wax crystals. Pour point depressants can also reduce the size of wax crystals, but not necessarily to a size where they will pass through a vehicle fuel filter. Fuels are normally treated with pour point depressant at the refinery.

How are operability additives used in diesel fuel?

Fuels are normally treated with pour point depressant at the refinery. Operability additives are designed to improve the filterability of diesel fuel through diesel fuel filters at low temperatures. Effective operability additives function as wax crystal nucleators, crystal modifiers and crystal dispersants.