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Is Kero bad for O-ring chains?

Discussion in 'Bling and Appearance' started by Matrix, Nov 23, 2007.

  1. I have been using kero to clean my chain before oiling. I have just had someone tell me that kero is bad for O-Ring chains and it destroys the O-ring.

    Is this true? Does anyone have any thoughts or advise?
    If Kero is OK, How often is it OK to use? Once a week? Once a month?

    I like to keep my bike looking it's best but don't want to wash the paint of it. :LOL:

  2. I wouldn't bother cleaning a chain more than once every couple months... Maybe more often if you ride dirt roads much. My understanding was that kero was OK for o-rings but WD40 eats them up.
  3. Reading further into Hornet's posted articles there...


    I followed a link to an FZ1 forum that actually asked the question to the WD-40 guys. Their response was that it won't eat up o-rings - but it might well displace or remove the grease that's sealed in behind the o-rings from the factory.

    WD-40 is primarily a penetrant, cleaner and water displacer - in fact, WD stands for water displacement.

    My previous post stands - WD-40 is not a good idea on o-ring chains, but kero is fine. Better still, go buy a chain cleaner from a bike shop. It'll cost lots but you'll at least be safe.
  4. It hardly seems necessary...

    Lubricated properly (not to excess) and when used on sealed roads, an O-ring chain should hardly need cleaning.

    When lubed correctly you also shouldn't get any fling off the chain onto the wheel rim or other parts of the bike. Always apply the lube on the inside of the chain, not on the outside.

    Try pulling back on the lube a little.

    If you must use something to clean, try diesel. It's even less volatile than kero. Neither compound should harm O-rings, but the liquid could penetrate where it should not be...


    Trevor G
  5. Looks like I opened one huge can Loz

    So Kero is good, bad and indifferent. I had only been cleaning my chain monthly and oiling every 300 to 500kms. Main reason I am cleaning it is to keep it looking fairly shiny. I use Motul chain oil and do get a bit of fling off but I am probably over lubing it.

    Thanks for the help and advise. Guess I won't ever be soaking my chain in kero but may use it every couple of months on a rag just to clean the sides of the chain.
  6. Kero is fine.

    It's been the only way I've been cleaning my chains - a combination of kero on a rag and/or tooth brush... 42000km on OEM chain and the chain is still going strong - that includes a whole bunch of trackdays... If I've really doused the chain in kero, I'll let it weather off, then I'll give it an extra heavy application of lube, let soak in, then wipe off the excess.

    Kero wont damage your O-ring.

    If you want to be doubly sure, find out what the O-ring material is (nitrile, EPDM, viton etc) and check an O-ring specialist supplier site with a material compatibility chart.

    Cheers mate.
  7. My personal reccomendation for the best & most fun way to clean a chain is as follows.
    Warm up bike.
    Put all your safety gear on.
    Head out to some nice sweeping open sweeping corners.
    Hold the throttle pinned open so you are travelling at 200+ for a while. In my experience about 15 minutes will do the trick.
    I guarantee your chain will be spotlessly clean.
    Now head home & lube up that chain while it is still warm.

    PS Don't come sooking back to me if it all goes pear shaped -ie loss of license, severly worn tyres, grin permanently attatched to your face etc etc etc.
  8. Thanks Roarin

    Thats pretty much the exact way I ride except there are a few corners here that I have to take slow (about 170 to 180 clicks) but there is still crap on my chain however there is always a grin from ear to ear.
  9. Yep, you shouldn't be getting fling off with motul. Use less and it should solve the problem. Also make sure the chain is warm when you do it. :)

    I've never had a problem using Kero for cleaning. I find the easiest and least messy way to do it, is to wipe the chain clean with a Kero soaked rag. :)
  10. :roll: Andy I think you been sniffin too much kero :grin:
    I have had this discussion with Seany before. Mate of mine who is an ex bike mechanic always reckon's kero swell the o-rings if left on. But plenty of people say they have had no probs. It is a fantastic degreaser. Each to his own I suppose
  11. But I rinse afterwards so it's all good. Always rinse, then wash the whole bike. At the end of the day, there's nothing but lube of the chain. And your chain did come up a treat Ken. :grin:

    Andy's method sounds like more fun but I'm not sure it's a viable long term option for me. :( :LOL: