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Author Topic: Sertao - oil tank drainage  (Read 432 times)

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Offline Garreths

Sertao - oil tank drainage
« on: March 06, 2018, 08:07:42 am »
Hi Guys,

Was not to sure of a the subject but it is along those lines.

i did an oil change about 3 weeks ago and topped up to spec the correct amount of oil. what i have noticed is when i got home yesterday i checked the oil and it was sitting above max on the dip stick. does it usually drain back into the  motor? or does it stay in the tank at such high level. it never seems to go down. Another thing a bit off topic. do these bikes always have sort of a "clunk" when selecting first gear?
 

Offline Dunnes

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Re: Sertao - oil tank drainage
« Reply #1 on: March 06, 2018, 08:51:21 am »
Yes, the clunk is normal. With new oil, it sounds better but its normal.

To check the oil level properly, take the bike for a spin to warm up the oil and have the oil pumps do their thing before you check the level.
This would be the correct level.

Did you fill up the specified amount or did you fill up until it got to a certain level? It could be that there was some left over (more than usual) oil in the engine after you drained it. That would explain the extra oil. Did you change the filter? That would also need a bit extra oil.
 
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Offline blockheadxl650v

Re: Sertao - oil tank drainage
« Reply #2 on: March 06, 2018, 10:06:13 am »
If you only drained the oil tank and not the sump as well, then added the 2.3l of oil as per spec then there will be to much oil in.
And what Dunnes said about the temp. manual says let it idle until the fan comes on and then check the oil.
 

Offline Garreths

Re: Sertao - oil tank drainage
« Reply #3 on: March 06, 2018, 01:58:48 pm »
when i did the oil change i drained the tank out using a syringe to suck up all the oil. i changed the oil filter.
 

Offline blockheadxl650v

Re: Sertao - oil tank drainage
« Reply #4 on: March 06, 2018, 10:44:07 pm »
There is a drain plug on the side of the oil tank (side cove should be removed) and then there is a sump plug under the sump. Both should be drained. I f you just remove oil from the top with a syringe there will still be quite a bit of oil left in the system.

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Offline Garreths

Re: Sertao - oil tank drainage
« Reply #5 on: March 07, 2018, 07:12:14 am »
i removed oil from tank and sump so there was nothing left in the motor. did the filter change and put the correct amount of oil in according to bmw handbook. i understand that once ridden the oil is circulating and pumps into the tank. but after leaving it for a whole night it seems like it has only dropped 5mm is that correct?
 

Offline Manfred

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Re: Sertao - oil tank drainage
« Reply #6 on: March 07, 2018, 01:39:41 pm »
It takes a while to drain everything back to the sump.

You can loosen the oil tank and tilt it away from the bike, then remove the bolt at the bottom and drain.
Maybe your syringe process did not remove all the oil, I do not know.

As the guys mentioned, operating temperature to check the oil is important.

Don't go by the book with regards to the 2.3l
I did my oil last night.
I was pressed for time, so I filled up with 2l
Ran the bike for a while and filled up with about 200ml or so.
The oil tank still looked empty.
That's where some guys think it needs more oil.
I'll check when I get home this afternoon and top up if needed.

The previous time, I filled up with 2.3l and had a bit of oil in the airbox.
Hopefully 2.2l is the magic number.
« Last Edit: March 07, 2018, 01:40:14 pm by Manfred »
 
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Offline Jughead

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Re: Sertao - oil tank drainage
« Reply #7 on: March 07, 2018, 02:08:57 pm »
It takes a while to drain everything back to the sump.

Only the residual oil around the lower portion of the motor (below the barrel) will drain into the sump.  Whatever is above the oil filter remains there, held there by the one-way valve behind the oil filter.  You get no reading whatsoever on the oil level in the sump.  How much is in there is anybody's guess.

Ignore the capacity readings altogether.  After an oil and filter change, you quite probably won't even be able to get 2L into the oil tank.  Stand the bike upright.  Fill up with however much it takes to get the oil level just above the MAX mark, whether on the dipstick on the newer bikes or the sight window on the older ones.

Start the motor without replacing the filler cap and you will be able to see the oil level dropping.  Top up slowly while the motor is idling until the oil level stabilizes on the MINIMUM mark.  Replace the filler cap. Let the motor warm up a little and then take it for a 10 minute ride. 

Switch off, keep the bike in the upright position (as if it were on a centrestand) or place it on the centrestand if you have one.  Now check and adjust the oil level.  On the older bikes, between the midpoint of the sightglass and the upper part of the red ring is good.  On the newer bikes, midway between the MIN/MAX marks and up to the MAX mark is good.
« Last Edit: March 07, 2018, 02:10:07 pm by Jughead »
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Offline Manfred

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Re: Sertao - oil tank drainage
« Reply #8 on: March 08, 2018, 06:56:29 pm »
I thought it would eventually drain if left for a while, like a few days    ;D

Well I checked my oil again and it looks like 2.2l is about right.
Jughead, is this ok?

 

Offline Jughead

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Re: Sertao - oil tank drainage
« Reply #9 on: March 08, 2018, 09:13:33 pm »
.
« Last Edit: March 08, 2018, 09:16:31 pm by Jughead »
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Offline Jughead

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Re: Sertao - oil tank drainage
« Reply #10 on: March 08, 2018, 09:14:51 pm »

I thought it would eventually drain if left for a while, like a few days    ;D

Well I checked my oil again and it looks like 2.2l is about right.
Jughead, is this ok?

If that oil level is at normal operating temperature, then yes, it is fine.

If that is the level after the bike has been standing for a few days, it is possibly way too high.  Take the bike out for a ride. After 15 minutes or so, stop and check the oil level.  It should then be somewhere between the half mark (the ring on the dipstick) and where it is in the photo you posted.
« Last Edit: March 08, 2018, 09:16:03 pm by Jughead »
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Offline Manfred

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Re: Sertao - oil tank drainage
« Reply #11 on: March 09, 2018, 07:49:25 am »
Thank you.

This was after I got home from work.

Will clean out the airbox when replacing air filter this weekend.
Hopefully 2.2l doesn't cause oil in airbox.
 

Offline lecap

Re: Sertao - oil tank drainage
« Reply #12 on: May 24, 2018, 03:19:22 pm »
General rules for dry sump oil system.
:
Fill up oil some 3/4 of total or as much as the tank will take.
Run engine until warm (liquid cooled: Fan comes on, air cooled: Min. 15 minutes)
Do NOT put the bike onto the side stand before switching off.
Check oil level and top up as necessary.

Due to the often relatively small cross section of the oil reservoir in comparison with a wet sump thermal expansion will have a much larger effect.
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