for those of you that change your own oil...

[doe12]

is oil supposed to be showing up in the "window"? my cbr f4i manual says that with an oil filter change, it requires 3.3 liters. i managed to pour in approximately 3.75 liters minus a little bit that spilled out, yet there is no oil showing up at all in the window. should i add more? or am i ok with what i put in?

[Kyosho26]

Is it on the side stand?? The bike has to be straight.

[Jikser]

put 3.3 as recommended...start it up, let it idle...shut off, let stand for 15min...check window (while bike is upright)

[Marmalade Dad]

Like everyone said, make sure the bike is standing straight up-and-down. A rear stand or centerstand (or sport chock) will help immensely. Most likely, you'll need to drain some of the oil since you put in so much.

[pantablo]

good luck just draining some of the oil...

everyone else has the main points covered, esp. jikser.

[doe12]

thanks yall

[D Duck]

that amount of extra oil is not going ot harm anything.

[ALEX]

that amount of extra oil is not going ot harm anything.

Wrong! If there is a great excess of oil, the crankshaft will impact the pool of oil that otherwise sits undisturbed beneath it. That causes the oil to splash around enough to add air bubbles ('Cavitation") to it, which is very bad for both the oil pump and any bearings later fed by the frothy-oil. The damage is caused by these bubbles Compressing (when inside a bearing), which will enable metal-to-metal contact rather than the intended metal-to-oil contact.

Not to mention, the crankshaft will be beating itself against a hard surface, namely the oil... That can't be good ---Ever seen an airplane crash into the ocean?... Liquid encoutered at high speed feels same as a cement wall!

I say drain the excess oil until the correct level is seen in the viewing window, with both bike's wheel's on the ground... Doing it on a stand will give a slightly different value, which will probably be ok, but you have to check it both ways (with/without stand) to figure out the difference for future reference.

--Al

[doe12]

wow. i didn't know a lil bit of extra oil could do so much harm. thanks for the heads up.

[D Duck]

Wrong! If there is a great excess of oil, the crankshaft will impact the pool of oil that otherwise sits undisturbed beneath it. That causes the oil to splash around enough to add air bubbles ('Cavitation") to it, which is very bad for both the oil pump and any bearings later fed by the frothy-oil. The damage is caused by these bubbles Compressing (when inside a bearing), which will enable metal-to-metal contact rather than the intended metal-to-oil contact.

Not to mention, the crankshaft will be beating itself against a hard surface, namely the oil... That can't be good ---Ever seen an airplane crash into the ocean?... Liquid encoutered at high speed feels same as a cement wall!

--Al

The crank hits the oil under normal circumstances, this is called windage, it is normal and accounted for also part of the reason engine builders knife edge the crank as well as reducing weight and balancing to a higher tolerance.

Modern motor oils also are engineered to resist foaming and passage through the filter will help keep it down. An extra .42L is not going to cause the problems you describe, maybe if he dumped in an extra 1-2L but then I would worry more about oil pressure problems at that point.

But do whatever makes you feel better about your engine.