overfilled oil?

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torque
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overfilled oil?

Postby torque » Wed Jun 07, 2017 3:02 pm

I think I may have overfilled the engine oil last week. Dipstick reads 1/4 to 1/2" above the full mark.
1/4" if it only sat overnight.
1/2" if it has set for a week.

Should I drain some out, or let it run?
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Re: overfilled oil?

Postby Emoore » Wed Jun 07, 2017 3:46 pm

This is a great question. Mine is like that as well, even after putting in the amount the book says.
Im interested in the responses.

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Re: overfilled oil?

Postby Michal » Wed Jun 07, 2017 4:08 pm

1/2" above max mark is not problem at all. 1" above could be close to crankshaft. The only concern is that crankshaft should not be hitting oil while cranking at high speed.
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Re: overfilled oil?

Postby Lee Pape » Wed Jun 07, 2017 5:25 pm

Are you screwing down the dip stick or just resting it on top of the threads? It is just supposed to rest on top of the threads when checking the oil. During the 650 engines we used to over fill the crankcase by a half a quart in the hot weather to help with cooling.
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Re: overfilled oil?

Postby Penrod » Wed Jun 07, 2017 7:43 pm

Lee Pape is right...engine dipstick is unscrewed and just sits on the rim to check the level. Transmission level just at the bottom of the threads on the fill hole, final drive dipstick screwed in to check level.
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Re: overfilled oil?

Postby hillbillybob » Mon Jun 19, 2017 7:34 am

A syringe in about the 100 ml size, can be handy to have in the shop. Can always extend it with a length of fuel line, for those harder to reach places. An example.....https://www.ebay.com/i/132142997522?chn=ps&dispItem=1
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Re: overfilled oil?

Postby stagewex » Mon Jun 19, 2017 8:22 am

Overfill, no big deal.
Underfill, a really big deal.
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Re: overfilled oil?

Postby Michal » Mon Jun 19, 2017 9:34 am

stagewex wrote:Overfill, no big deal.
Underfill, a really big deal.


... however there is a limit for safe overfill.
My wife's coworker got a corporate pool car for short business trip. He was told that this particular car consumes oil a bit so it's advisable to check oil level at gas stops and fill if necessary. So when he stopped for the first fuel fill-up he opened the hood and opened oil fill cap, the only clearly visible cap on the top of the engine.
He didn't see oil level, obviously, so he filled one 1 liter bottle. Yet no oil level in sight, so he bought 5 liter (1.3 gallon) canister and poured all in.
Yet again, so he bought next 5 liter oil .... and again until the oil level was just under the filling cap.
The engine made 200 yards until one piston with connecting rod broke. The remaining rod on crankshaft almost cut the engine apart.
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Re: overfilled oil?

Postby hotflash44 » Mon Jun 19, 2017 9:49 am

my 2016 gu dip stick has the full mark as a v shaped bend in the dip stick i assume that in the middle is full or is it the top of the bend? were talking 1/4 in either way so no biggie IMHO.
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Re: overfilled oil?

Postby Peter Pan » Mon Jun 19, 2017 11:01 am

Stagewax, you are confirmedly wrong:
Once upon the time in 1982 I filled the engine oil to the upper mark at freezing temperatures (not even above the mark!)...35km later I blew the engine of my first bike CB125. Once the crank started to punch the oil it created foam and blew the oil through every single housing partation. My friend and I arrived at the the concert with oiled trousers and boots.
Might be on a Ural there is more tolerance, but I would not like to test that. Therefore the syringe with a piece of hose for the final drive oil comes very handy.
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PS: Saturday I had a story like Michael told...Filled some Bacteria culture from one bottle into another one...I was so concentrated in not to loose any drop in the shop, that I didn't notice the new bottle had a hole...I noticed it after 1,5liter were pored into a 0,6l bottle :? All the floor was wet. That can happen only at the optiker's shop where you just encharged new glasses.
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Re: overfilled oil?

Postby Mothra35 » Mon Jun 19, 2017 11:49 am

Wouldn't the crankcase breather tube just blow out most of it anyway into the airfilter or atmosphere?
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Re: overfilled oil?

Postby stagewex » Mon Jun 19, 2017 2:39 pm

Yeah, I am talking about a Ural... nothing else.
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Re: overfilled oil?

Postby gobium » Mon Jun 19, 2017 2:44 pm

If it worry you
Let liltle oil out.
Not at drain plug
Do it at oil filter housing

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Re: overfilled oil?

Postby torque » Mon Jun 19, 2017 2:51 pm

gobium wrote:If it worry you
Let liltle oil out.
Not at drain plug
Do it at oil filter housing


Doesn't seem to be foaming. If I let it set for a day -- it's about 1/4" above the full mark (dipstick unscrewed). If I let is set for a week, then it's no more than 1/2" above the bull mark. I figure if 1/4" is ok, then by the time I turn the engine over with the kicker 4-5 times to prime the carbs and circulate some oil, then it's probably around 1/4" at that point anyway.
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08 Linhai Aeolus 300 (sold)
09 Yamaha Majesty
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Re: overfilled oil?

Postby Manscout » Tue Jun 20, 2017 3:43 pm

I accidentally over filled a little bit this weekend. Here is what I found with my bike since you asked. If I am riding around town (up to 45mph) I never have any issues. However, once I hit highway and interstate speeds, and I get 3rd gear with high RPMs; I have issues. It leaks out of the dipstick area and down the side of the engine. I have my breather hose rerouted down towards my kickstand, and it coats my rear wheel, hub, and muffler. In fact, anything over 3/4 between the lower and higher mark on the dipstick gives me blow out like that. So, if anything, it just creates a mess.
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