Air filter oil - Kawasaki KLR 650 Forum
2008+ KLR650 Wrenching & Mod Questions For repair, maintaining or modifying discussions related to the newly updated 2008 and beyond, Generation 2 KLR650 Motorcycle.

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post #1 of 25 Old 01-30-2018, 06:38 PM Thread Starter
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Air filter oil

Just wanted to hear what you all use for oiling your OEM air filter, and why you choose it?

2016 KLR 650
2017 BMW S1000RR (traded in for
2018 Ducati V4S
1983 GL1100 Goldwing
2017 Yamaha R1
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post #2 of 25 Old 01-30-2018, 06:59 PM
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I have used the same oil that I use in the engine.
Reason, this is more or less what the manual suggests and it is an oil that I have on hand.
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post #3 of 25 Old 01-30-2018, 07:23 PM
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The fine pore foam of the OEM air filter was/is intended to use engine oil. I use SAE40 on it, instead of 10W40. Clean up of the dirty air box is easier, because it stays oilier. (I don't bother cleaning the box very often.) It's just gonna' get dirty again, because engine oil creeps, everywhere!

The fine pored OEM air filter actually works longer with my chosen SAE40 than with stickey stuff and is easier to clean than stickey stuff, IMHO.

SAE40 works great on Twin-Air brand foam filters also.

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post #4 of 25 Old 01-30-2018, 08:26 PM
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I use Maxima FFT. I bought it for my UNI filter, which is more porous than the stock air filter. I have three stock filters, though, and wound up using it on them, too.

It seems like a good oil that performs pretty well but it does have some downsides.

It is really sticky stuff, so it is both hard to apply and hard to clean. It takes real effort to do either job. Well, kerosene does a pretty quick job of cleaning, but using a detergent is tough. Hard to be green with it. I imagine gas would be quicker still, but I haven't tried that.

The stuff seems to get stickier when exposed to air. It comes out of the bottle OK, but if you try to massage it into the filter and get it evenly spread around it acts like it gets stickier pretty quickly and doesn't want to move. I have to put an ounce or so on a filter and quickly drop it into a bag, squeeze the air out, and then massage the crap out of it. I think it may have a bit of solvent in it that flashes off.

It's a nice pretty blue color, so when it is evenly distributed in the stock filter you can see a light green color on the filter.

You need to use gloves, too, because it doesn't come off of anything it gets onto.

I've done each filter a couple of times and am thinking of just going back to motor oil for the stock filters and using this stuff on the UNI. Or maybe I'll give it to my neighbor and tell him it is the best thing for his KTM. His dog pooped in my yard a couple months ago. Revenge is a dish best served cold.

It's not what I would choose if I had to clean and oil a filter every couple thousand miles. Cleaning and oiling a batch every 10K miles is OK. I just got to that point today ;^(...
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post #5 of 25 Old 01-30-2018, 10:24 PM
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Has anyone tried the No Toil air filter oil? Tom, you mentioned in your post that the oil you use is very sticky and a pain to clean. The no toil is non-toxic, biodegradable, and comes with a detergent made specifically for that oil. The oil is thin when applied and becomes "sticky" like the oil you mentioned. Only, I don't think it's as sticky as yours. It is much easier to apply than what you describe (stays fluid longer). It has a red color to it, so it is easy to ensure even application.

The detergent is easy to use also. All you gotta do is put some warm water in a bucket, mix in the specified amount of detergent, submerge the filter, squeeze it while holding it under the water, release you grip and voila! All clean!

I have used this oil on factory filters as well as Uni brand filters on my dirt bikes, quads, 3 wheelers, street bikes, chainsaws, you get the idea. I realize not everyone likes to use this type of system, but I thought I would bring it up since you are already using a similar product.

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post #6 of 25 Old 01-30-2018, 11:21 PM
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NoToil has always sounded pretty good, but it is one of those things that I have heard cautions about. That has kind of put me off of trying it.

There were complaints of seam separation on filters and hardening of filters. Stories varied as to whether it was the new oil only or both oils. I guess one is red and one is green, the first being petroleum based and the second being a bio-degradable oil.

I also heard that only the No-Toil cleaner would clean the oil out of the filters. Not a show-stopper for me as I don't often clean a filter on the road. I carry extras if I think I'm going to need a fresh filter.

To be fair, I have heard more reports of "never had a problem, been using it for years" than I have heard reports of problems.
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post #7 of 25 Old 01-30-2018, 11:45 PM
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Tom,
I have only used the RED biodegradable flavor. I have not experienced any of the issues you mentioned. You are correct about using only the No Toil brand cleaner, but it works very well.

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post #8 of 25 Old 01-31-2018, 08:38 AM
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I use aerosol-can air filter oil on my air filter foam.

A confession. Very un-KLRista behavior.

Yet . . ., "An honest confession is good for the soul."



Oh, yes; the question, "Why?" isn't answered. Well, the stuff is purpose-manufactured, and most convenient in application, with the aerosol can valve and plastic delivery tube. The amount and location of filter oil applied can be controlled with some precision and with minimum mess.

While the "store-bought" specialty filter oil is more expensive than plain ol' garden-variety 30 W (or 40 W), how much of this stuff will one use? What is the difference, in cost-per-mile, of the aerosol goop versus motor oil? Projected overall service life cost delta? Not a deal-breaker, I think, for me; YMMV!

Would I insist on carrying a filter oil can on a trip through the Gobi Desert? Maybe not; I might depend upon the lubricant available at the next oasis, in that instance.

Last edited by Damocles; 01-31-2018 at 08:51 AM.
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post #9 of 25 Old 01-31-2018, 08:47 AM Thread Starter
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“Specialty” oil filter oil claims aside, has there been any comparisons done as to the effectiveness of them over using engine oil?

I haven’t googled for any, I’m more curious about tests done here on this forum.

2016 KLR 650
2017 BMW S1000RR (traded in for
2018 Ducati V4S
1983 GL1100 Goldwing
2017 Yamaha R1
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post #10 of 25 Old 01-31-2018, 09:00 AM
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Over the years I have had the opportunity to use pretty much all of the options. I settled on Maxima FFT years ago for any bike ridden on the street. The reason being it just laughs at water infiltration and I ride in the rain. Some bikes are more inclined to get moisture in the filter than others, especially if running foam pods. The FFT won't let it through or wash. It also stays put......it doesn't "sag" to the bottom portion of the filter over time. It's good stuff.

Last year I decided to try the green No Toil kit and am using my nieces DR100 filter as the test. I think it works fine if applied correctly......the main thing being let it set for 24 hours before using it. if you don't it will run to the bottom.....if you do it seems fine. I see no dust in the intake and it seems fine with small amounts of moisture but not near what the FFT is.
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