Constant Dirty 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 23 Old 02-02-2020, 03:07 PM Thread Starter
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Constant Dirty Oil

So, I have been changing the oil pretty frequently. But it keeps staying dirty. Has anyone else had this problem? Would just changing the oil and then running the engine and then changing the oil again like 3 or 4 times in a sitting be a bad idea (not to mention a use of quite a bit of oil)? I just want it to be clean.
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post #2 of 23 Old 02-02-2020, 04:17 PM
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Quote:
Originally Posted by KiLleR_Ride View Post
...But it keeps staying dirty. Has anyone else had this problem?...
That's normal

Quote:
Originally Posted by KiLleR_Ride View Post
...Would just changing the oil and then running the engine and then changing the oil again like 3 or 4 times in a sitting be a bad idea...
It would do no harm to anything but your wallet, so it's not a bad idea. Simply unnecessary and with no upside.

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...I just want it to be clean.
It is clean. Don't worry about it.

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post #3 of 23 Old 02-03-2020, 04:20 PM
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Quote:
Originally Posted by KiLleR_Ride View Post
So, I have been changing the oil pretty frequently. But it keeps staying dirty. Has anyone else had this problem? Would just changing the oil and then running the engine and then changing the oil again like 3 or 4 times in a sitting be a bad idea (not to mention a use of quite a bit of oil)? I just want it to be clean.
Primarily, you are just looking into the dark recesses of your engine. No light inside there.

Unscrew the oil fill cap and wipe a little oil off of the clutch with your finger tip, it won't look nearly as dark. The multi-plate wet clutch and transmission gears is what I believe darkens most motorcycle engine oils earlier than car engines.

May I suggest that you run your engine oil at least 2500 miles between changes and same some of them dinosaurs for later?

Or spend some money on an Oil Analysis to calm your senses. I've have always ran at least 3000 miles between changes.
Some oils are better than others, but any engine oil will darken with use in your bike. The color really doesn't indicate much.

Here is some reading material, https://www.klrforum.com/klr-other-m...is-thread.html
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post #4 of 23 Old 02-03-2020, 05:31 PM
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An old-timers/racers way of evaluating oil contamination.

Get a white paper towel, fold it into 1/4'ers. Then pull a bit of oil out of the crankcase.

I use a cattle syringe barrel, available at most farm stores (does not include a needle which you don't need) attach a length of tubing to the syringe.

Put a couple of drops on the paper towel. Let it set for an hour or two. Check to see if the colors of the oil change in concentric circles.

If it's dirty, you will see rings..like the planet Saturn. If there are any shiny bits....well....crap.

And, make sure that your choke (enrichener) is properly closing. Running too rich will cause excessive soot in your oil.
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post #5 of 23 Old 02-04-2020, 08:26 AM
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Indeed as others have posted, oil gets dirty as part of its normal "duty".

But, poorly sealing piston rings will result in dirty engine oil much much quicker than oil in a healthy engine.

Jason

P.S. I like ymracing's paper towel oil analysis!
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post #6 of 23 Old 02-04-2020, 03:07 PM Thread Starter
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Thanks for the info!
So, when putting brand new oil in after an oil change, it is very clear, via the site glass, that there is brand new, clear, clean oil. If I turn the bike on for, literally, just a few seconds and turn it off, the oil looks as dirty as before the oil change. I was just wanting to clarify that that is normal. I drain it for a while and e'rytang. Thanks for helping out, all!
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post #7 of 23 Old 02-04-2020, 03:15 PM
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Yes, that is normal. Even though you have let it drain there is still a fair bit of oil in the sump. Look at "I am Joe's Crankcase" to visualize. There are several baffles, bumps, nooks, and crannies to hold a fair bit of oil.

It doesn't take much dark oil to make honey-colored oil quite a bit darker. And, to @pdwestman's point, you're not seeing backlit oil so it looks even darker. Your oil change is still clean, though. When I drain my oil, usually at 3000 miles, what comes out of the case is rather nicely honey-colored in the light.

Don't worry about it; worry more about changing the gas every week. Changing your gas every week is very good for your mental health.

Tom [email protected]

“I still held his automatic more or less pointed at him, but he swung on me just the same. It caught me flush on the chin. It was meant to be a hard one, but a pansy has no iron in his bones, whatever he looks like.” -Philip Marlowe

“'Why' and 'How' are words so important they cannot be too often used.” -Napoleon Bonaparte

Sting like a butterfly.
Noli Timere Messorem

Last edited by Tom Schmitz; 02-04-2020 at 03:21 PM.
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post #8 of 23 Old 02-04-2020, 04:16 PM Thread Starter
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Originally Posted by Tom Schmitz View Post
Yes, that is normal. Even though you have let it drain there is still a fair bit of oil in the sump. Look at "I am Joe's Crankcase" to visualize. There are several baffles, bumps, nooks, and crannies to hold a fair bit of oil.

It doesn't take much dark oil to make honey-colored oil quite a bit darker. And, to @pdwestman's point, you're not seeing backlit oil so it looks even darker. Your oil change is still clean, though. When I drain my oil, usually at 3000 miles, what comes out of the case is rather nicely honey-colored in the light.

Don't worry about it; worry more about changing the gas every week. Changing your gas every week is very good for your mental health.
Love it!! Thanks a ton, i really appreciate it!
And I change the gas about twice a week Great thing about Vegas!
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post #9 of 23 Old 02-04-2020, 05:09 PM
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Vegas affects me the way clowns affect four-year-old girls.



Scares the shit outta me, and that's without even getting off the freeway.

Tom [email protected]

“I still held his automatic more or less pointed at him, but he swung on me just the same. It caught me flush on the chin. It was meant to be a hard one, but a pansy has no iron in his bones, whatever he looks like.” -Philip Marlowe

“'Why' and 'How' are words so important they cannot be too often used.” -Napoleon Bonaparte

Sting like a butterfly.
Noli Timere Messorem
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post #10 of 23 Old 02-05-2020, 09:49 AM
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Thanks for the info!
So, when putting brand new oil in after an oil change, it is very clear, via the site glass, that there is brand new, clear, clean oil. If I turn the bike on for, literally, just a few seconds and turn it off, the oil looks as dirty as before the oil change. I was just wanting to clarify that that is normal. I drain it for a while and e'rytang. Thanks for helping out, all!
I recon that I will ask if you lean the bike to the Right & then back to the side stand 3 times, before re-installing the drain plug & gasket?

There is probably near 8 oz of oil hiding in the LH engine cover & the various cavities of the crankcase.

Also does your oil filter have the center pipe in it?
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