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Installing an oil catch can on your vehicle

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Do you own a turbo vehicle? Installing an oil catch can is essential for engine longevity.

Due to strict emission regulations, late model engines require all crankcase fumes to be burnt through the combustion cycle, not vented to the atmosphere. This process in conjunction with the EGR (exhaust gas recirculation) helps engines meet emission standards. The end result means oil vapor and exhaust fumes are vented into the intake system.

The combination of forced induction (turbo or supercharger) and higher compression ratios in diesel engines increase the amount blow by gasses produced. Blow by gasses refers to combustion gasses that leak past piston rings and into the engine crankcase.

We consider an oil catch can a necessity for any modern turbo diesel engine however most turbo vehicles (new or old) can benefit from having an oil catch can installed.

What is an oil catch can?

A catch can is essentially an oil separator. It is designed to remove the oil from the blow-by gasses and prevent them from entering the intake system.

How does an oil catch can help my engine?

From new, whenever the engine is running the intake system gets lined with oily residue created by blow by and passed through the PCV (positive crankcase ventilation) valve into the engine inlet. This process creates a wet surface for the exhaust soot from the EGR to cling to.  The never ending cycle causes a tar-like build up in the intake system and results in reduced air flow to the engine.  The air restriction changes the air-fuel ratio, reducing efficiency and performance as well as increasing combustion temperatures on diesels.  The long term effects of this can be quite costly; increasing fuel consumption and worst case, it may cause long-term damage which could end up costing you thousands in labour and replacement parts.   If the oil is removed, the intake can stay dry and allow the EGR to operate efficiently, preventing those future repair costs and keeping engine performance optimal.

Some people block the EGR off completely.   We do not recommend that you do this to your vehicle.  Apart from being illegal and increasing emissions, it may bring on a check engine light and cause your vehicle to not operate effectively.

What should an oil catch can have?

For an oil catch can to be effective it must;

How reliable is an oil catch can?

With an oil catch can, quality really does matter. If you opt for a cheap model, you run the risk of it not catching enough oil or damaging the engine if it becomes blocked. Some cheap oil catch cans only have tiny 12mm inlets or outlets, reducing the flow through the system, which can lead to increased pressure. Too much pressure build up can cause engine seals to split and leak.

Here at GCCEM we recommend and install Flashlube Catch Can Pro systems. These units have been flow tested and proven not to be restrictive, even on old worn diesel engines. They incorporate a 19mm inlet and discharge port and have a pressure relief valve.

Why it’s important to install the oil catch can correctly

It is possible to fit our Flashlube Catch Can Pro system by yourself.  We have them available as a universal kit or a vehicle specific kit including moulded hoses and custom brackets for an ever expanding range of vehicles. Of course it goes without saying that care needs to be taken when fitting these kits.  An incorrectly installed kit can damage your engine.  The easier option is to get the catch can kit installed by one our qualified technicians while you wait.

Will installing an oil catch can void my new car warranty?

Flashlube Catch Can Pro advise that your vehicle warranty will not be voided when fitted correctly.  That said, GCCEM always recommends checking your particular warranty wording in detail or contacting the manufacturer for confirmation before installing any after-market parts on your vehicle.

How to maintain your oil catch can

The Flashlube Catch Can Pro incorporates a drain hose and tap to allow for periodical draining. As a rule, this is required at around 5,000km intervals. In addition to draining the system the filter medium should be replaced, these will generally last approximately 40,000kms. Environmental conditions and driving style of the vehicle will directly relate to how often this will have to be done.

As well as installing a Flashlube Catch Can Pro our final recommendation is to carry out an upper engine and intake clean with each service. We recommend products such as Wynns professional EGR4 (EGR3 for petrol engines).  This cleaner is sprayed into the intake system before a service to help clean and break down any build up inside the intake. This assists to keep your engine operating at optimal performance.

Photos of a diesel engine without the oil catch can installed

The photos included are of a VW Amarok that has only been driven 60,000kms. In the first photo the oily build-up is being removed from the intake manifold. The second photo shows the EGR valve with contamination before cleaning.   As all air enters the engine past this point, you can see the significant restriction this has caused.  The final photo shows what the EGR valve looks like after cleaning the contamination.  An oil catch can would have dramatically reduced this build-up.

Stay tuned for more photos.

Interested in finding high quality oil catch cans on the Gold Coast, and getting one fitted in your vehicle? Then contact us (https://gccem.com.au/contact-us/) today for more information or to book a time.

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[/spb_text_block] [spb_image image=”1685″ image_size=”full” frame=”noframe” caption=”VW Amarok with oily sludge in intake manifold” caption_pos=”hover” remove_rounded=”yes” fullwidth=”no” overflow_mode=”none” link_target=”_self” lightbox=”yes” intro_animation=”none” animation_delay=”200″ width=”1/2″ el_position=”first”][/spb_image] [spb_image image=”1683″ image_size=”full” frame=”noframe” caption=”VW Amarok EGR with contamination before cleaning” caption_pos=”hover” remove_rounded=”yes” fullwidth=”no” overflow_mode=”none” link_target=”_self” lightbox=”yes” intro_animation=”none” animation_delay=”200″ width=”1/2″ el_position=”last”][/spb_image] [spb_image image=”1684″ image_size=”full” frame=”noframe” caption=”VW Amarok EGR after cleaning” caption_pos=”hover” remove_rounded=”yes” fullwidth=”no” overflow_mode=”none” link_target=”_self” lightbox=”yes” intro_animation=”none” animation_delay=”200″ width=”1/2″ el_position=”first”][/spb_image] [spb_image image=”1682″ image_size=”full” frame=”noframe” caption=”Flashlube Catch Can Pro available at GCCEM” caption_pos=”hover” remove_rounded=”yes” fullwidth=”no” overflow_mode=”none” link_target=”_self” lightbox=”yes” intro_animation=”none” animation_delay=”200″ width=”1/2″ el_position=”last”][/spb_image] [/spb_column] [spb_column col_sm=”4″ padding_horizontal=”0″ width=”1/3″ el_position=”last”] [spb_blank_spacer height=”25px” width=”1/1″ el_position=”first last”] [spb_text_block animation=”none” animation_delay=”0″ simplified_controls=”yes” custom_css_percentage=”no” padding_vertical=”0″ padding_horizontal=”0″ margin_vertical=”0″ border_size=”0″ border_styling_global=”default” width=”1/1″ el_position=”first last”]

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