Walker Air Sep Filters on 44DB

Discussion in 'General Maintenance/Repair Questions' started by bbwhitejr, Mar 6, 2018.

  1. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    I will have to check for sure, but I am supposed to have the blue Walker Air Sep filters and I have a couple of questions.

    1) What is the difference between the blue and red?
    2) What is the difference between the read and blue oil?
    3) Can the red K&N oil be used on the blue filter?

    All thoughts welcomed.

    Thanks,
    Bennett
     
  2. HUMPH

    HUMPH Well-Known Member

    Nov 4, 2009
    SF BAY AREA
    2003 410DA,
    2004 C14 Caribe
    CAT 3126TA's 350HP/
    50HP Honda
    I use the K&N red oil for my air seps all of the time. I keep an extra set so I clean and oil the, and exchange when necessary the clean and oil the other set. I am not aware of the difference between the blue and red filters but I believe the blue is for Cummins and red for CAT. You can buy the blue here or many other online stores. https://walker-airsep-superstore.my...-air-filter-cleaning-kit-red-oil-part-ddf9016
     
  3. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    Thank you for the info.

    Bennett
     
  4. ZZ13

    ZZ13 Well-Known Member GOLD Sponsor

    Nov 25, 2009
    Lady's Island, SC
    2001 400 Sedan Bridge
    Cummins 450 Diamond
    I have Cummins. I have red. All my buddies with Cummins have red.
     
  5. quality time

    quality time Well-Known Member

    Oct 30, 2007
    Upper Chesapeake Bay
    2003 480DB and Kencraft 190 CC
    QSM11's
    Mine are blue. Cummins.
     
  6. bmac

    bmac Active Member

    Jan 11, 2008
    Holbrook, NY
    2006 58 Sedan Bridge, Walker Bay Generation 390 RIB w/40hp Yamaha, 2014 Wellcraft 232 CC w/Yamaha
    MAN 900 CRM
    The original equipment Walker Air Seps that were supplied with QSC's and those retrofitted to QSM's were all blue. I don't know the difference between the blue and red though.
     
  7. bmac

    bmac Active Member

    Jan 11, 2008
    Holbrook, NY
    2006 58 Sedan Bridge, Walker Bay Generation 390 RIB w/40hp Yamaha, 2014 Wellcraft 232 CC w/Yamaha
    MAN 900 CRM
    Oh and those on my MAN 900's are blue too.
     
  8. quality time

    quality time Well-Known Member

    Oct 30, 2007
    Upper Chesapeake Bay
    2003 480DB and Kencraft 190 CC
    QSM11's
    I don't think there is a difference...the blue ones just look cool.
     
  9. ZZ13

    ZZ13 Well-Known Member GOLD Sponsor

    Nov 25, 2009
    Lady's Island, SC
    2001 400 Sedan Bridge
    Cummins 450 Diamond
    Yup. The red makes it look like something is wrong. By the way my boat and my buddies are all the older mechanical 6CTA engines.
     
  10. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    I have emailed Walker asking what the difference is. I will advise when I get an answer.

    Bennett
     
    HUMPH likes this.
  11. Blueone

    Blueone Well-Known Member SILVER Sponsor

    Jan 24, 2007
    Lake Erie, Ohio
    2004 420 Sundancer
    Cummins 6CTA 450's
    This red blue stuff...just proves its still winter...

    But if I had to choose ..I would vote red every time.. :)
     
    Last edited: Mar 7, 2018
    Jaybeaux likes this.
  12. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
    Brian - I think mine are red!!! I'll look Friday...
     
  13. bmac

    bmac Active Member

    Jan 11, 2008
    Holbrook, NY
    2006 58 Sedan Bridge, Walker Bay Generation 390 RIB w/40hp Yamaha, 2014 Wellcraft 232 CC w/Yamaha
    MAN 900 CRM
    They very well may be Carter. I spoke to MAN this morning about this issue. Apparently the dye (blue or red) is added to the oil so that it can be determined that the oil has fully coated the filter element. There is no difference to the oil itself, just a different coloring. As a side note I was a little surprised that MAN actually new the answer as oiling filters isn't necessarily the best use of a $150/hr. mechanic. Since it takes me about two hours to clean and oil my four air filters, the cost of having MAN remove, clean, oil and reinstall my four filters it's not far off the cost of just buying new ones. When I asked him about it he said most owners they deal with give them an open check book for maintenance and they repair (clean and oil) or replace based on their own judgement. Just for the record, I do that maintenance myself.
     
  14. bmac

    bmac Active Member

    Jan 11, 2008
    Holbrook, NY
    2006 58 Sedan Bridge, Walker Bay Generation 390 RIB w/40hp Yamaha, 2014 Wellcraft 232 CC w/Yamaha
    MAN 900 CRM
    Soooooo, this subject got me thinking so I did some additional investigation. When I checked with PDI in Houston, the supplier in the US for MAN parts, they told me the new filters for my engines, which are $70 each, are pink, HOWEVER, that is the color of the filter media as they are NOT delivered oiled. They recommend using the blue oil so that it is easier to see where the oil has covered and penetrated. And my wife thinks I have too much free time on my hands....
     
  15. The Bill Collector

    The Bill Collector Well-Known Member SILVER Sponsor

    Jun 2, 2008
    Tacoma, WA
    450 Sundancer
    3126 Cat's
    Red on my CAT's...
     
  16. quality time

    quality time Well-Known Member

    Oct 30, 2007
    Upper Chesapeake Bay
    2003 480DB and Kencraft 190 CC
    QSM11's
    That's odd, mine came oiled when purchased from Walker. This was also confirmed by a dock neighbor that called Walker.
     
  17. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
    LOL! my "MAN man" looked at mine on my annual service and said they looked fine. I agree with doing them ourselves! At least in FL my "Man man" charges $120 an hour!!
     
  18. bmac

    bmac Active Member

    Jan 11, 2008
    Holbrook, NY
    2006 58 Sedan Bridge, Walker Bay Generation 390 RIB w/40hp Yamaha, 2014 Wellcraft 232 CC w/Yamaha
    MAN 900 CRM
    I'm sure that's true. Cummins used Walker Air Seps on the QSC and later model QSMs, MAN does not. Not sure who their supplier is, though they look just like the Walker Air Sep filters.
     
  19. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    I just asked and got a response from a very reputable yard in Gulf Shores, AL. Red are for Cats and blue are for Cummins. The only difference between the two was a possible slight difference in micron size. The red oil and the blue oil are also the same except for the dye in them. His only suggestion was maybe to stay with the correct color of oil so as not to possibly void a warrranty.

    Bennett
     
  20. importmonkey

    importmonkey Opinionated Member

    947
    Jul 9, 2015
    Middle River, MD
    2007 44 Sundancer
    QSC 500s
    Thanks again for all the great info, Bennett!
     

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