SIGNIFICANTLY BETTER PROTECTION DURING PRESSURE SURGES*

The bypass valve is a safety mechanism that allows oil to bypass the filter temporarily if extreme weather or rapid acceleration prevent oil from flowing through the filter media fast enough – because unfiltered oil is safer than no oil.​

FILTRON oil filters are tested and proven to protect under pressure

• It’s critical that the valve only opens at the car manufacturer’s precise pressure specification. If it opens at low pressure, the engine is exposed to constant unfiltered oil and wear. If the opening pressure is too high, the engine is starved of oil and risks seizing
• Consistently precise operation relies on high quality materials and design – and as bypass valve performance isn’t felt or seen by drivers and fitters, it’s an easy target for other filter manufacturers seeking to cut costs and increase margin​
• In a laboratory test against an equivalent competitor filter where the car manufacturer’s specified valve opening pressure was 2.5bar, the competitor filter opened at a lower pressure, while our filter performed to the manufacturer’s specification*, performing with precision to avoid flooding the engine with unfiltered oil unnecessarily
• The precision of FILTRON’s bypass valve maximises engine protection, ensuring critical parts are lubricated and protected 

_{*Controlled M+H laboratory test of FILTRON OP 616/3 vs equivalent product from a competitor manufacturer. By-pass valve precision test proved FILTRON OP 616/3 performed to manufacturer’s exact specification.​ Manufacturer specifications vary across models.} 

OUR BYPASS VALVE IS ENGINEERED TO PRECISELY MEET THE CAR MANUFACTURER’S SPECIFICATION

The precisely calibrated stainless-steel spring only releases the thermally resistant valve when it is subjected to the exact pressure specified by the manufacturer, which varies across vehicles.