Oil filter internals explained

Blue Print reveals what's inside its oil filters

Oil filter internals explained

Bilstein Group brand, Blue Print, is this week highlighting its range of oil filters and revealed what’s inside to ensure they perform.

A Blue Print spokesperson said: “Oil filters protect the engine by keeping the oil free from dirt and contamination during prescribed service life.

“Microscopic wear particles, dust and soot from combustion must be filtered efficiently out to prevent them from embedding in the bearing surfaces, which can quickly lead to increased engine wear.”

Blue Print says it supplies oil filters with premium quality filter media and the efficiency and capacity to protect between extended service intervals.

“The filter media, or paper, has arguably the most important job of a filter.

“It must have the capacity and durability to trap and hold the contaminants whilst maintaining its integrity between the extended service intervals of a modern motor vehicle.”

Meanwhile, an anti-drain back valve is built into spin-on type filters and allows oil to pass through the filter in one direction only, preventing oil from draining away from the filter and syphoning back through the oil pump when the engine is switched off.

A bypass valve protects the filter media on start-up and allows unfiltered oil to bypass the filter, should the media become clogged.

The spokesperson added: “On start-up, the sudden rise in pressure on the pump side of the filter is not balanced by pressure on the engine side of the filter.

“This could cause the filter media to collapse or starve the engine of oil if it were not for a correctly specified bypass valve fitted either in the filter itself or in the filter housing.

“The pressure at which the bypass valve opens is critical.Too high a pressure and the load on the filter media could cause it to collapse or starve the engine of oil on start-up.

“Too low, and the bypass valve will open before the filter reaches its capacity during its service life.

“This would mean that the engine would be exposed to unfiltered oil and wear would increase rapidly.”

With over 2,300 part numbers in its filtration portfolio for different makes and models, Blue Print offers an extensive range which has been rigorously tested and researched to ensure a high standard of quality.

Blue Print supplies only OE matching quality parts, with first time fit and a three year unlimited mileage warranty on parts.

The Blue Print product brand is part of the Bilstein Group, which also incorporates the strong Febi and SWAG brands.

Further information can be found by selecting ‘more details’ below.

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