Oil Level Check - Behaviour of oil levels at different temps - Suzuki GSX-R Motorcycle Forums Gixxer.com

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post #1 of 3 (permalink) Old 08-08-2013, 05:52 AM Thread Starter
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Motorcycle: GSXR600L1
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Oil Level Check - Behaviour of oil levels at different temps

I have just completed an oil and filter change on my 2011 GSXR600L1 for the first time (previously done by Suzuki) and I am a bit confused by the oil level readings. I was a little blase when filling up the oil and think i may have over filled a bit. I put in about 2.7 litres to achieve readings I see now (manual calls for 2.5).

I am looking for some plausible explanations for what I am seeing and whether or not other people have experienced the following:

All levels are taken with the bike level.

1) When the bike has been sitting over night, the oil has settled and is cold it reads over full. Oil line just below the very top of the sight glass (small bubble of air). I believe this is to be expected as oil has drained to the bottom and markings are based on "warm" levels. Correct? Should it read overfull by this magnitude?

2) In accordance with the service manual, cold prior to riding, I run bike at idle for 3 minutes, stop, and then wait a further 3 minutes before checking level. Oil is at about 55 degrees C (so not at normal operating temp but warm). Level reads about 3/4 full (above L, below F). This, in accordance with the manual is a good check.

3) Jump on bike and go for a 20 minute blat. On return prior to shut off I let bike idle for 1 min then shut off. Oil is hot and at about 85-90 Celsius. Wait 3 minutes. Level now reads above full and just at the top of the sight glass. - Is this normal? ie should i expect to see such a difference in levels between 50 degrees C (warm) and normal riding temps of 75-90 degrees C?

I understand thermal expansion will have some effect on oil but in this quantity, over this temperature range, is it enough to cause such a change in the levels in the sight glass to read above full?

I have trawled countless forums and online articles to determine whether it is normal to show above full when conducting a check hot (but still after waiting 3 mins) with no clear answer.

Any advice on this would be appreciated. I didn't pay a lot of notice to the behavior of the oil levels when Suzuki was doing the servicing because I trusted it would have been done right, and with a brand new bike not burn oil. Probably a bad move and not technically savvy of me..

Last edited by BWalm; 08-08-2013 at 06:02 AM.
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post #2 of 3 (permalink) Old 08-08-2013, 09:23 AM
Join Date: Jun 2004
Location: Canada
Motorcycle: gsxr k8 1000
Posts: 1,212
Re: Oil Level Check - Behaviour of oil levels at different temps

your oil level is fine, not to worry about it if a wee bit over full.. go ride..

"advice", NEVER trust the steeler.. always double check anything done in a shop..

about a month ago a new-bee driver brought in a bike that had just bean serviced at the local steeler, sed it was running hot and didnt shift woth shit.. did a quick look-over, noticed the oil level was over the top of the glass, tipped the skooter waaay over, still full.. ended up draining "4 ltrs" of oil out to bring it down to the proper level.. steeler must have a grade 4 student drop out doin the uil changes..
get a manual and do yer own servicing..

Diet coke and non-alcoholic beer are first steps towards owning inflatable dolls.

Nothing is fool-proof to a sufficiently talented fool.
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post #3 of 3 (permalink) Old 08-09-2013, 12:30 AM Thread Starter
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Join Date: Aug 2013
Motorcycle: GSXR600L1
Posts: 2
Re: Oil Level Check - Behaviour of oil levels at different temps

Definitely had some bad experiences with car dealerships.. Never again. All about independent specialists. Thinking about it today I reckon that the change in oil viscosity from 50 c to 90 c would mean the oil would drain down a lot faster after resting for 3 minutes, meaning a higher level would display when checking at hot temps over the service manual "warm" test. Tiny bit of expansion I guess as well. Only thing that bugs me is that the manual doesn't explicitly say conduct check when cold. It does say check before riding though... Pedantic. Prob just drain 50ml or so.
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