Comline offers oil filter tips

October 03, 2024
Comline offers oil filter tips
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Parts specialist Comline has provided some useful information on developing oil filter technology and some common oil filter fitting errors. 


The most common filter type is the spin-on filter made up of a metal canister with an internal filter element. There are 3 valve types which are prevalent on these filters: 
  • Anti-drainback: Found on the ‘dirty side’ of the filter, this valve prevents oil from draining back into the engine when it is switched off. 
  • Bypass: Acting as a safety feature, the bypass valve comes into play when a filter becomes blocked, which can be due to dense oil from cold starts or a delayed filter change. 
  • Anti-syphon: Located on the ‘clean side’ of the filter, this valve stops clean oil from flowing back into the engine when it is switched off. This valve also retains a small ‘reservoir’ of oil inside the filter, which means quicker lubrication after ignition. 
Comline filters incorporate several other design features, including perforated centre tubes to help oil flow, robust housings and nitrile butadiene rubber (NBR) gaskets for flexibility and durability in harsh conditions. This helps to ensure OE matching performance. 

Installation issues are the most common cause of filter problems. Comline says the most common mistakes are: 
  • Overtightening: Comline recommends that technicians ‘hand-tighten’ oil filters during installation. The best method is to twist the filter until the gasket contacts the vehicle, then add a quarter turn. 
  • Cross-threading: This occurs when the filter is not aligned with its housing, leading to poor gasket contact, an insecure seal and the potential for leaks. 
  • Lack of gasket lubrication: Applying a small amount of oil to the gasket before installing the filter will help create a stronger seal and make the filter easier to remove during its next service. 
By following these simple instructions, technicians can ensure prompt and precise oil filter installation. 

Comline supports customers with many technical bulletins and installation advice which are available here. 
Comline
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