How does the oil filter work in an engine?

The oil filter is an unassuming component that determines the cleanliness of the oil circulating in the engine. Without it, contaminants would quickly destroy the precise assemblies.

What does the oil filter trap?

• Metal particles produced by friction
• Soot and combustion by-products
• Deposits and contaminants from use
• Particles that could scratch engine components

What if the filter clogs?

Once the absorption limit is reached, the bypass valve opens — the oil bypasses filtration, carrying contaminants straight into the engine. That’s why the filter is changed at every oil change.

Saving on the oil filter is an illusory gain — it’s one of the cheapest components protecting the engine.

In our service we always change the oil filter together with the oil. See what else is worth changing as a set.