What risk does one run by overfilling engine with engine oil?

[plucky duck]

Let's say be 25-50% beyond the stick's top line? Over normal city driving and taking the car to extreme high revving RPM speeds.

And as a side, why the heck do new cars these days don't come with an engine pressure gauge?? And a battery gauge??

[trini]

the seals will leak.

[PrinceMS]

Just drain it. I am sure if u take it to used car mechanic he would do it for free or $5
but not worth over pressuring the engine.

[PrinceMS]

btw, if its slightly overfilled - dont worry about it. If its more than half the fingernail , get it drained

[Viz79]

High pressure may develop in the crankcase from having too much oil in the engine and can lead to oil leakage, as well as premature engine wear and damages. Just get it drained ASAP.

~V79~

[oldsnail]

Let's say be 25-50% beyond the stick's top line? Over normal city driving and taking the car to extreme high revving RPM speeds.

And as a side, why the heck do new cars these days don't come with an engine pressure gauge?? And a battery gauge??

i think u mean engine oil pressure and a voltometer gauge.. alot of cars do come with them.. i guess its just the car u chose doesnt have it..

if u just refer to your manual to see how much oil it actually uses, it would help.

[Focus]

drain it

[Charliesangel]

The risk is not oil pressure (contrary to previous posters) The risk is that the crankshaft hits the oil level, causing hydraulic shock and for which is not desighed. And of course if the level is really high it starts getting into the piston area.

But as others said.............. drain it

[morkys]

Also robs power and fuel economy because too much oil causes resistance to the crank. Lubrication is fine, but bathe the crank in oil and it has to push too much out of the way. Too much or too little oil can also result in foaming the oil which makes your lubrication factor drop.

[GTI]

Did this on a old '81 Civic. It burned it off. What a smoke show! But still drove the same after. Do you care about your car? If so drain it.

[nx2k]

it'll ruin the crank too
too much oil pressure than the crank can handle

[TrevorK]

And as a side, why the heck do new cars these days don't come with an engine pressure gauge?? And a battery gauge??

A lot of new cars come with oil pressure and battery gauges - yours just doesn't.

[hotstartup]

ull be screwed

[weedb0y]

it happened with our 92 grand am..had to burn it off..since it was way too much lol

[plucky duck]

I changed the oil just last week and notice that it does drive a bit sluggishly. I'll drain it this weekend. It was about 5-7cm over the line. I just thought it'd be safer to have overfilled a bit than have no oil in the system.