How much oil is too much oil?
Discussion
Drain it back out until the correct level.
You'll be churning it up in the sump, creating unwanted aeration. Worst case in a big overfill is a hydrolocked engine (crank pulls piston down but so much oil beneath the piston that it can't move and crank pulls rod and gudgeon pin straight out of the piston).
You'll be churning it up in the sump, creating unwanted aeration. Worst case in a big overfill is a hydrolocked engine (crank pulls piston down but so much oil beneath the piston that it can't move and crank pulls rod and gudgeon pin straight out of the piston).
Tony1963 said:
I’d be syphoning some out. I wouldn’t be able to enjoy the engine with that overfilled oil on my mind.
Many years ago I collected a rental car that had been overfilled. Blew the head gasket while cruising on a motorway at 70 ish.
Why risk it?
Really?Many years ago I collected a rental car that had been overfilled. Blew the head gasket while cruising on a motorway at 70 ish.
Why risk it?
Maybe if it's brimming out the top of the engine.
Or perhaps head gasket is a completely unrelated fault.
Very unlikely over filling engine with oil
I run 1L over fill on my car without issues and have done for 20k miles.
0.5L or so is NOTHING do not worry about it.
That sounds like a relatively small amount of excess oil and I wouldn't expect it to cause any problem.
The main risks are that the oil level at rest reveals a leaking gasket (you'll notice that soon enough) or that the oil covers the windage plate and starts getting beaten up by the crank - in that case you'll get rising oil temperatures, falling pressures, power loss and excessive oil blow-by. If you don't get any of those symptoms, you're fine.
I don't have the same car, but when I go on track I routinely overfill by half an inch to reduce oil surge and have never encountered any problems from that - I think the max fill level always has a considerable margin of safety in it.
The main risks are that the oil level at rest reveals a leaking gasket (you'll notice that soon enough) or that the oil covers the windage plate and starts getting beaten up by the crank - in that case you'll get rising oil temperatures, falling pressures, power loss and excessive oil blow-by. If you don't get any of those symptoms, you're fine.
I don't have the same car, but when I go on track I routinely overfill by half an inch to reduce oil surge and have never encountered any problems from that - I think the max fill level always has a considerable margin of safety in it.
xjay1337 said:
Really?
Maybe if it's brimming out the top of the engine.
Or perhaps head gasket is a completely unrelated fault.
Very unlikely over filling engine with oil
I run 1L over fill on my car without issues and have done for 20k miles.
0.5L or so is NOTHING do not worry about it.
I’ve no idea about the details. I was given a replacement and was on my way. Maybe if it's brimming out the top of the engine.
Or perhaps head gasket is a completely unrelated fault.
Very unlikely over filling engine with oil
I run 1L over fill on my car without issues and have done for 20k miles.
0.5L or so is NOTHING do not worry about it.
One litre over? No way. No point, unless it’s drinking the stuff.
The OP’s engine isn’t one I’d go experimenting with. If it was an old hulk of a knackered donk, maybe. But jeepers, I’m not recommending an engine rebuild, just the removal of half a litre!
Tony1963 said:
I’ve no idea about the details. I was given a replacement and was on my way.
One litre over? No way. No point, unless it’s drinking the stuff.
The OP’s engine isn’t one I’d go experimenting with. If it was an old hulk of a knackered donk, maybe. But jeepers, I’m not recommending an engine rebuild, just the removal of half a litre!
Yes. 1L over.One litre over? No way. No point, unless it’s drinking the stuff.
The OP’s engine isn’t one I’d go experimenting with. If it was an old hulk of a knackered donk, maybe. But jeepers, I’m not recommending an engine rebuild, just the removal of half a litre!
Due to trackdays and concerns with these engines about oil starvation.
It's also got a larger oil cooler.
Many of the hardcore Nurburgring users do this as well as race teams.
0.5L over is nothing to worry about and I wouldn't even bother draining it out.
If you don't know about the details then don't use it as an example. It spreasds mis information.
Oil level isn't really related to head gasket failure in any way. Do you think oil pressure could ever be higher than the pressure within the cylinder itself?
Unless the oil level was high enough to go up to the piston rings . But that would be 3 to 4 L over on a 6L capacity engine.
So OP has nothing to worry about. However, if it would play on his mind which is fair enough , then drain the extra.
But he doesn't need to!
In my view, an overfill of 0.5-1l is probably not going to cause any kind of issue to the engine itself. However the engine does breathe it’s own crankcase vapour and an overfill will cause more oil to get into the inlet. This just makes a mess really. I’d reduce the level simply because it is overfilled and it’s easy to reduce it.
xjay1337 said:
Yes. 1L over.
Due to trackdays and concerns with these engines about oil starvation.
It's also got a larger oil cooler.
Many of the hardcore Nurburgring users do this as well as race teams.
0.5L over is nothing to worry about and I wouldn't even bother draining it out.
If you don't know about the details then don't use it as an example. It spreasds mis information.
Oil level isn't really related to head gasket failure in any way. Do you think oil pressure could ever be higher than the pressure within the cylinder itself?
Unless the oil level was high enough to go up to the piston rings . But that would be 3 to 4 L over on a 6L capacity engine.
So OP has nothing to worry about. However, if it would play on his mind which is fair enough , then drain the extra.
But he doesn't need to!
That all makes sense, especially for your track car with high g cornering etc. And maybe you wouldn’t worry, maybe most people wouldn’t. But... I would Due to trackdays and concerns with these engines about oil starvation.
It's also got a larger oil cooler.
Many of the hardcore Nurburgring users do this as well as race teams.
0.5L over is nothing to worry about and I wouldn't even bother draining it out.
If you don't know about the details then don't use it as an example. It spreasds mis information.
Oil level isn't really related to head gasket failure in any way. Do you think oil pressure could ever be higher than the pressure within the cylinder itself?
Unless the oil level was high enough to go up to the piston rings . But that would be 3 to 4 L over on a 6L capacity engine.
So OP has nothing to worry about. However, if it would play on his mind which is fair enough , then drain the extra.
But he doesn't need to!
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