what would happen?

[cilvrwing38]

what would happen if you put too much engine oil in our celica?

[cilvrwing38]

anyone???

[nxracer]

How much is too much?

cup
1/2 quart
Quart
Gallon

[Johan]

Originally posted by cilvrwing38
what would happen if you put too much engine oil in our celica?

What do you mean? In the trunk or in the engine ? :D :D :D

If you put too much oil in the engine the lower part of the pistons and the rods will not get any oil, so they will not be cooled. Those parts can get too hot and might bend or brake.........

[cilvrwing38]

about half to 3/4 of a quart...

[Pdiddy]

ok , embarassing story:

back in the day, when I was like 16 (now I'm a more mature 23), I had a VW Rabbit. 4 cylinders of raw power for sure

Oil light goes on, so I fig I need to add some oil, so I do. Don't check the dipstick (this is the embarrasing part).

day 2: Oil light goes on: I add more oil.

day 3: Oil light goes on: Hey, less oil is bad, more is good, so I toss in another quart.

day 4: Oil light goes on: Damn, I must be burning through the sh!t. More oil goes in. Start the car, and smoke pooooors out of from the engine compartment, starts flowing into the passenger compartment...

The moral of the story: duh, use that dipstick. and double-duh, a four banger never needs 9 quarts of oil.


These are the funny parts of youth that your parents will never let you live down.

[Da Kine Guy]

Uhh, actually, what will happen is your oil pan may be filled up so high that it comes in contact with the rotating crankshaft. The crank then whips up the oil into a nice frothy crap pile that will not flow through your engine anymore and has lost most of its oil properties. So, oil pressure drops, crankshaft sleeve bearings give out, engine gets starved of oil and stuff starts making tremendous friction and heat, rods possible get bend, head warps, you have an aluminum block so that will warp as well, cylinder walls get totally scarred........

So yeah, NEVER DRIVE YOUR CAR IF YOU FILLED IT UP WITH OIL PAST THE FULL MARK!!

[4CyLSiLvACeLi]

:werd:

[Johan]

Originally posted by Da Kine Guy
Uhh, actually, what will happen is your oil pan may be filled up so high that it comes in contact with the rotating crankshaft. The crank then whips up the oil

You are wrong here. If the oil is at a normal level the oil is already in contact with the crankshaft and will be whiped up. It is supposed to do that. With too many oil it will not be whiped up anymore.................

[Da Kine Guy]

Uhhh, I don't think so :wtf: Go out and listen to your engine, I don't hear the crankshaft splashing around oil down in the block. If it were you would definately be able to hear it.

http://cartalk.cars.com/Columns/Archive/2001/August/03.html

It's not just me, the guy here says exactly what I stated earlier. Next time you do an oil change experiment with the oil. When you hit it fast and hard enough you'll start to make bubbles and froth. Oil pumps can't pump froth cause it's mainly just air, and air doesn't lubricate.

This guy says the same thing

http://216.239.33.100/search?q=cache:Vw87N5a4l_MC:www.motorway.com/home/articles/qandaoverfilledoil.asp+oil+overfilling&hl=en&ie=UTF-8

Now, on a TWO-stroke engine you would be right. The crank case is completely submerged in an oil/gas mixture and actually uses to downward push of the piston to pressurize the mixture letting it jet into the combustion chamber once the piston clears the lower porthole. You see, in this system there is no air to "froth up" with, so there is no danger of the mixture causing harm while being agitated.

[GTSpec]

johan, u dont know what ur talking about so dont try and correct people. da kine guy is spot on. the process is called oil 'windage'. however, that scenario is at the extreme. most likely you will get some foaming of the oil and loss of power due to the drag caused by the oil on the crank.

[rearendman0]

Originally posted by Johan


You are wrong here. If the oil is at a normal level the oil is already in contact with the crankshaft and will be whiped up. It is supposed to do that. With too many oil it will not be whiped up anymore.................

are you trying to be funny, because i am crackin up:rofl:

[Tikked Again]

How are bearings lubricated then?

When vehicles are under hard cornering doesn't the oil "get pulled" to one side up into the crank area? Wouldn't this cause frothing also?

And finally...here's a quote from this website http://www.autotech.com/crank.htm

SportTuned Knife-Edged Crankshafts

"An Autotech exclusive, our SportTuned Crankshaft is made in Germany from a high quality forging. It is then knife-edged on a CNC mill, bringing the weight to just under that of a stock 92.8mm crank. Knife-edging the crank reduces rotating mass, allowing for a faster revving, higher rpm engine. The thinner counterweights also cut parasitic power losses normally encountered when rotating through splashing oil in the oil pan."

I guess my point is that the oil is supposed to be up to the crank level....atleast enough to get it on the parts that need it. I believe oil-windage in excess mainly happens to vehicles that were not originally designed for sustained high rpms.

I'm not saying you guys are wrong about it...but the extra oil that is turned to "froth" is just that....extra oil. Since the oil pump should be below that line of froth it should not have that negligable of an effect. Atleast that is how I'm looking at it...


Tik

[Johan]

Originally posted by GTSpec
johan, u dont know what ur talking about so dont try and correct people. da kine guy is spot on. the process is called oil 'windage'. however, that scenario is at the extreme. most likely you will get some foaming of the oil and loss of power due to the drag caused by the oil on the crank.



Maybe you all should check the manual that came with the car.

(European version page 182) : WARNING : Never put in too much oil. The oil level should NEVER be above the upper marker, because that could cause severe damage to the engine !

[Da Kine Guy]

I think when it says "rotating through splashing oil" it means when the crank shaft hits oil that might splash up to the crankshaft level due to engine vibrations and driving (turning left and right really fast like cone driving).

What did that prove Johan? I don't understand what you were trying to point out there, we are all saying that if you fill it too high it will cause engine damage. This guy wanted to know what happens so I told him what the cause of the engine damage was from (churning oil into froth by the crankshaft). No one said it was ok to overfill your oil :wtf:

[Mistrimeat]

Originally posted by Johan




Maybe you all should check the manual that came with the car.

(European version page 182) : WARNING : Never put in too much oil. The oil level should NEVER be above the upper marker, because that could cause severe damage to the engine !

Johan you should not venture out of OT...EVAR. :D

[zcs626]

:chuckles:

:popcorn: