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SOME say it’s like fart­ing in your own air cylin­der, while oth­ers sug­gest it’s like plumb­ing the sewer into your drink­ing water. Then there are the ones that reckon it’s the same as re-in­gest­ing your own vomit. Ei­ther way, none of the above sound par­tic­u­larly palat­able, but they’re all apt metaphors for what’s go­ing on when oily fumes are di­rected back into your en­gine.

If you haven’t cot­toned on to what we’re jab­ber­ing on about, many com­mon-rail diesel en­gines have a ma­jor fault: the spent gases and dirty fumes are redi­rected back into the en­gine us­ing EGR (ex­haust gas re­cir­cu­la­tion), of­ten via in­let man­i­folds, tur­bos and in­ter­cool­ers.

Yep, they pipe dirty, oily gases back into what should be kept free from oil and sludge. The­o­ret­i­cally, there should only be dry soot flow­ing through th­ese pipes, but the oily fumes turn that soot into sludge, which in turn blocks up ev­ery­thing it comes in con­tact with.

Why? It’s all in the name of clean­li­ness – not for the en­gine, but for the en­vi­ron­ment. It seems those desk-grinders that make the emis­sion rules have deemed it okay to bug­ger an en­gine for the sake of keep­ing air pol­lu­tion down. Don’t get me wrong; I’m all for keep­ing air clean, but surely there’s a bet­ter way to achieve the re­sults with­out dam­ag­ing the in­ter­nals of our mod­ern, pow­er­ful, ef­fi­cient and ex­tremely ex­pen­sive en­gines.

To counter this, the af­ter­mar­ket in­dus­try has de­signed an ex­tremely sim­ple fix: the Catch Can. While other meth­ods have been de­vel­oped to fil­ter out the dirty fumes that en­ter your en­gine’s in­lets, the Flashlube Catch Can Pro of­fers more pro­tec­tion with the in­clu­sion of pres­sure re­lief and vac­uum re­lief valves, so as not to over­pres­surise the en­gine, which could lead to other fail­ures.

The Flashlube model also fea­tures freeflow­ing, large-di­am­e­ter in­let and out­let ports of 19mm (no­tably the same di­am­e­ter as the pipes on my en­gine), a re­place­able fil­ter and a ro­tat­ing head to aid in fit­ting. It’s all com­pact enough to fit into the most over­crowded en­gine bays.

The Catch Can Pro will en­sure your in­let man­i­fold stays clean, it will pre­vent your in­ter­cooler and turbo from clog­ging up with oil and gunk, and it will also keep sen­sors clean to en­able them to per­form as de­signed.

For in­stal­la­tion on my TDV8 Troopy, fit­ting the Catch Can Pro was a sim­ple process of in­ter­cept­ing the air line go­ing from the rocker cover to the air in­take hose (which goes from the air fil­ter to the turbo), and then in­stalling the Catch Can in-line and mount­ing it next to the bat­tery.

Once in­stalled, the Flashlube Catch Can Pro fil­ters the fumes via the air­flow pass­ing through the in-built re­place­able fil­ter and al­lows clean air to pass into the turbo, in­ter­cooler and in­let man­i­fold. The clean air then trav­els into the en­gine, which sat­is­fies all emis­sion reg­u­la­tions, as op­posed to EGR.

The kit comes com­plete with a drain hose and tap, which I’ve in­stalled di­rectly be­low the Catch Can Pro on the chas­sis rail. This al­lows easy drainage of the cap­tured oil into a con­tainer, for proper dis­posal. This can be done at reg­u­lar ser­vice in­ter­vals and should only take a minute or two. An­other ad­van­tage of cap­tur­ing waste oil is that if you find an ab­nor­mal amount of oil in the can, some­thing might be amiss with your en­gine.

The Flashlube Catch Can Pro keeps en­gine in­ter­nals clean and free-flow­ing, which im­proves over­all per­for­mance. Keep­ing that gunk out of where it should never have been in the first place can only be a good thing for your en­gine!

RATED AVAIL­ABLE FROM: www.flashlube.com RRP: $280 WE SAY: Should be fit­ted to ev­ery EGR diesel.

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