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Thread: Mann vs Mahle Air Filters

  1. #11
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    Z9 are a hydraulic filter in the real world

    How does the Baldwin B2 stand in the quality stakes?
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  2. #12
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    Quote Originally Posted by incisor View Post
    Z9 are a hydraulic filter in the real world

    How does the Baldwin B2 stand in the quality stakes?
    I remember Ben saying they're good, up there with Donaldson and Fleetguard.
    IMO the anti-drain back valve on the P169071 Donaldson is a bit ordinary from when I used it on the TD42T Patrol engine. (mounted horizontally)

    Ryco's filtration is pretty coarse with their standard oil filters, the last specs I had for the Z9 were up around 30 micron nominal (beta2=30) when it was still made here and now the Z9 is sourced from China.....
    Not sure how the Ryco syn media Z9 equivalent compares.
    Having said that so are Donaldson and Fleetguards cellulose element filters as that's what the engine manufacturers used to spec. I'm guessing the old flow/filtration compromise.
    The synthetic medias have rewritten the rule book.

    At the end of the day the most important filter for an engine is the air filter, followed by the fuel filter for compression ignition engines, a bad one of either will cost big $ in repair bills. I really don't know if the difference between an exxy and average oil filter impacts much on wear and engine life. Real oil filtration only occurs down around the 1 micron level.

  3. #13
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    Quote Originally Posted by rick130 View Post
    Be prepared for sticker shock !
    What do you mean by sticker shock?

  4. #14
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    Quote Originally Posted by rick130 View Post
    I really don't know if the difference between an exxy and average oil filter impacts much on wear and engine life. Real oil filtration only occurs down around the 1 micron level.
    I use a Britpart oil filter as they have the shape on the bottom of the case to use their oil filter removal tool. It's the only filter that I can get on and off easily enough with the aftermarket larger turbocharger and exhaust on my TD5 - I've tried all the other brands with no luck. I figure that with a quality brand centrifugal oil filter in place and changing every 10,000km it should be ok.

  5. #15
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    Quote Originally Posted by twr7cx View Post
    What do you mean by sticker shock?
    They're not cheap.

  6. #16
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    Quote Originally Posted by twr7cx View Post
    I use a Britpart oil filter as they have the shape on the bottom of the case to use their oil filter removal tool. It's the only filter that I can get on and off easily enough with the aftermarket larger turbocharger and exhaust on my TD5 - I've tried all the other brands with no luck. I figure that with a quality brand centrifugal oil filter in place and changing every 10,000km it should be ok.
    As long as the guts don't disintegrate you should be fine.

    A man I have a lot of respect for when it comes to all things lubrication used to run a fleet of trucks with DD60 Series engines and initially Donaldson ELF filters and Mann-Hummel by-pass centrifuges. This would be around 10-15 years ago.
    He oil tested everything.
    The M-H by-pass filters were so good he ditched the Donaldson full flows for cleanable wire gauze baskets, and they never needed cleaning.
    His fleet average oil change interval on a premium full syn 5W-40 engine oil was 96,000km.
    MTU in Brisbane pulled one of his engines down with 1,000,000km on it as a demo at a seminar.
    None/minimal sludge and all tolerances were within new spec. They reassembled it and put it back into service.

  7. #17
    Roverlord off road spares is offline AT REST
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    Quote Originally Posted by twr7cx View Post
    I recently purchased a brand new Mann and Mahle air filters to suit my D2a TD5. Both were listed as 'OEM' and I therefore assumed that I would have two of the same. What arrived:





    Aside from the slightly different colouring, the first thing that I noticed is that the paper used on the Mahle was much rougher. Touching it confirmed this.
    The Mahle also looked to have less pleats than the Mann - counting them confirmed this, 10 less pleats.
    The orange rubber seal on the Mann is significantly softer and squishier than that of the Mahle - I suspect that it would seal better. It's also much neater in it's moulding and manufacturing.

    I then held them up to a light:




    The Mann filter was dark except for a pleat which was opened up to to being held curved, while the Mahle filter would light up with light coming through all over it.

    While I've clearly done no scientific testing on either, it'll be Mann filter only for me from now on. The quality difference is significantly noticeable in it's feel.


    EDIT: if you haven't already seen it, you may also be interested in OffTrack's comparison of Cooper vs Genuine LR air filter at TD5 air filters .
    And here a picture of a genuine, note 2 ribs on top to support the elements VS 1 on the others, the finish on the genuine ones is not that good. Genuine is also labeled made in UK.
    Genuine.jpg


  8. #18
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    Has anyone fitted or know of a franz toilet roll bypass filter to a td5 or is lack of available room a problem
    D2 2004 TD5 Classic

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  9. #19
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    Quote Originally Posted by thai_tiger View Post
    Has anyone fitted or know of a franz toilet roll bypass filter to a td5 or is lack of available room a problem
    Why ?

  10. #20
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    why? because frantz filters will remove particles down to 2 microns. My brother bought one for xr6 many years ago and has refitted it to all new cars since, he swears by it. Oil stays cleaner for longer. A diesel might benefit even more but just wondered if any had tried.


    The Science - Frantz Filters
    D2 2004 TD5 Classic

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