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oil capacity - strange finding

2.3K views 22 replies 11 participants last post by  ADrunkRussian  
#1 · (Edited)
Hi guys, A strange conundrum has appeared on my 2017 AT (manual)

It was time to bring the old girl in for large service (spark plugs, air filters, oil and filter change etc...)

I rode her for an hour or so and immediately while hot drained the oil.

Its taken me a few weeks to get around to getting the new filter and oil and refilling her.
I ordered a 4l container of oil and dumped it all in. (note I just smeared a bit of the fresh oil around the seal of the oil filter before installing it.

A few days later I poured the old oil from the collection tray into the empty container (from the fresh oil) for disposal.

This is when I saw something strange.

The container has a small window strip to show the contents and it showed ~2.5 litres with all the old oil!
Strange. I had even emptied all the oil out of the old filter into the collection tray. This was all the oil that came out of her.

2.5L !

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Then I checked the dip stick and to my shock, its showing way overfilled! (note, she is on her centre stand at the moment. and this is the dip stick not screwed in)

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The oil level is hard to see with fresh oil so I have put this red arrow to show where the oil is coming up to.



Whats going on here?


I have done oil changes before on my AT and this is a new phenomenon.
Is there a huge bubble of air trapped somewhere? Is this the oil pump empty as well?
But this does not explain only 2.5L of oil coming out either!

I am pretty sure I was not running her with a whole 1.5L of oil missing!!!
That would have surely had the oil light blasting at me!

Is there some trapped oil that did not come out?, but would that old oil not have at least tainted the fresh oil a bit (new clean oil on the dip stick), and a whole 1.5L!

Also she does not burn or leak oil either. Never had any oil go missing like this, especially such an amount!

Any thoughts from the community?
I still have not kicked her over since the oil change.
 
#8 ·
I just looked up the manual again and see it now...

This is the one I opened...

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Do'h!!

Do you think that 1.5 litres is trapped behind that other bolt?

If so I wonder if I could open it and try to drain off that amount assuming/hoping that the new oil has not overly mixed with the old. (engine has not been started and its kind of cold in my workshop)
 
#10 ·
You can drain it. I had a crush washer missed during a previous oil change. Caught it during cleanup but after oil was added. I loosened the bolt. Kept pressure on it after the threads were clear and rapidly removed the bolt while moving my thumb to plug the hole. Added the washer to the bolt and reversed the process with almost no oil loss. You should be able to meter out a controlled flow using that technique.

Another option would be to suck it out with a syringe through the fill hole. Cleaner and more accurate if you can snake a tube past the stator.
 
#11 ·
I opened the other drain hole and black oil came gushing out!

I let it go till I guessed about 1.5 litres were out,
Emptied it into the plastic container and it came to just on the 4L

Then I checked the dip stick and its showing well now.

Thanks guys for shaking the cobwebs out of my old noggin!
**** should read the ****ing manual closer.
Was sure I had it all in hand.

No **** @rider_marc ! fullon brainfart!
 
#23 ·
I opened the other drain hole and black oil came gushing out!

I let it go till I guessed about 1.5 litres were out,
Emptied it into the plastic container and it came to just on the 4L

Then I checked the dip stick and its showing well now.

Thanks guys for shaking the cobwebs out of my old noggin!
**** should read the ****ing manual closer.
Was sure I had it all in hand.

No **** @rider_marc ! fullon brainfart!
Haha happy to hear you figured it out! Happens to the best of us. RTFM is a phrase for a reason!
 
#21 ·
I did the big service so it was the sparkplugs too.

Holy ****!

Those top plugs are hard to get at.
More acurately, its pulling the plug caps! there is almost not enough space to get them all the way out. They are stupidly long and the rubber sleeve is a tight fit in the hole.
The whole thing was a miserable rigmarole that took far more time than I had hopped.

The shop manual says to loosen the radiators to get to the plugs, but you also have to remove the fans and shrouds from behind the radiators. Beware of those. Its not a simple removal and I snapped a lug getting it back on again! aaagggrrrrrr. **** those tiny Japanese hands!

I don't know if its my cave man proportions that prevented this from being a smoother job or is it just bad design and workshop manual misinformation!
Now I am scrambling around to find that soddin bolt for the horn as I reassemble the mess of....