Engine Oil Level After Cool Down?

Hello, I changed the oil and filter,added 3.5 quarts and then made sure the oil level was near the top line,figuring that 1 I could remember where the level was and 2 if I was using any I would not be running low on a long Ride.Book says somewhere between the lines. After I start and run it around the block I park it on the center stand, it looks fine. I leave and come back in a few hours and the oil is over the top line completely full. Now I know its not gas getting in, I smelt the oil and its just oil. The polymers have cooled down so the oil should be near normal viscosity 10 weight. Do I drain out until desired level or know that I originaly filled it cold to the top line and forget it.?

mzandmz wrote:

After I start and run it around the block I park it on the center stand, it looks fine. I leave and come back in a few hours and the oil is over the top line completely full.

Don't worry about it. There is a little more oil drain down after you park it. If it is in the correct range a couple of minutes after you turn it off, you should be fine. If it goes up a shade after, it's only a little bit high. Mine does the same thing. If it is OK after I shut off the engine a wait a minute, I call it right.

Oh by the way Trivia-- on oil DID you know what by example-10w40 means? 10 is the starting weight or viscosity the oil is when cold. "w" stands for(TRUE INFORMATION) not weight but "winter", I Know. strange huh. and 40 weight is when its hot or the thickest viscosity it will get to provide best lubrication under the pressures and heat. Oil needs more viscosity at higher temps. How does it get thicker? Polymers,little "beads" that swell up when heated causing the oil to thicken. As it cools down the "beads or polymers " get smaller causing the oil to return to the starting weight. Interesting Trivia.

mzandmz wrote:

Oh by the way Trivia-- on oil DID you know what by example-10w40 means? 10 is the starting weight or viscosity the oil is when cold. "w" stands for(TRUE INFORMATION) not weight but "winter", I Know. strange huh. and 40 weight is when its hot or the thickest viscosity it will get to provide best lubrication under the pressures and heat. Oil needs more viscosity at higher temps. How does it get thicker? Polymers,little "beads" that swell up when heated causing the oil to thicken. As it cools down the "beads or polymers " get smaller causing the oil to return to the starting weight. Interesting Trivia.

!0W-40 is made by starting with 10 base oil and adding viscosity increasers (VIs) that are polymers which expand when hot (making the oil more viscous) and contract when cold to let it go back to the normal base oil characteristics. It is the VI's which get torn up by the gears in a bikes tranny which is why the oil's viscosity breaks down over time. You might start with 10W-40 and in 3000 miles, it might be 10W-20.

mzandmz wrote:

Oh by the way Trivia-- on oil DID you know what by example-10w40 means? 10 is the starting weight or viscosity the oil is when cold. "w" stands for(TRUE INFORMATION) not weight but "winter", I Know. strange huh. and 40 weight is when its hot or the thickest viscosity it will get to provide best lubrication under the pressures and heat. Oil needs more viscosity at higher temps. How does it get thicker? Polymers,little "beads" that swell up when heated causing the oil to thicken. As it cools down the "beads or polymers " get smaller causing the oil to return to the starting weight. Interesting Trivia.

exactly.:dry: