Whats the real deal with overfilling the engine oil ?

[Ringsby4]

Placards everywhere and dipstick marked MAX !
I've been particular in this regard but should I be ?
I just changed out the oil and because I needed the empty container lol,things are desperate 'round here !,I overfilled by only ~ 6 oz's taking it up to the top of the plastic guage part...
Job done=having a beer.
I've heard stories in my dim past as to cranks hitting the overfull dam of oil and destroying themselves,race cars maybe.
Whats the drum

[OliNix]

Overfilling oil = broken engine, either hydro locked or excess oil in the pistons and super smokey and sometimes fire..... I would pull out the excess and throw it in the bin

[Sibmets]

Max oil vs no oil

https://youtu.be/wx6sRCelBss

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[80sGuy]

You should be fine. Relax. Just take her out and let the turbo burn some off. In no time you'll be down to the 'min' mark as our cars are blood-thirsty for oil.

[Ringsby4]

You should be fine. Relax. Just take her out and let the turbo burn some off. In no time you'll be down to the 'min' mark as our cars are blood-thirsty for oil.

They are at that,I'm not too concerned about Wolfies between changes consumption.Its always about 1 lt per 7k km change ( that's about 1 qt per 4,300 miles )
You're reassuring and It was only 6 fl oz overfull,I can't see that being too much drama.Germans typically are pedantic.

[Brillo]

I'm sure a small amount of overfill is OK because there is likely some margin between the max level and where you can have problems. The biggest problem is encountered when the crankshaft is allowed to hit the surface of the oil. Under these circumstances the crankshaft will start to foam the oil and can entrain substantial amounts of air in it - oil frappe so to speak in spite of the fact that most premium oils have anti-foaming additives in them to avoid this situation. Anyway, 'oil frappe' loses its lubricating properties and, if not rectified, will F.U. your bearings pretty quickly. Best to avoid this situation.

[Theiceman]

I'm sure a small amount of overfill is OK because there is likely some margin between the max level and where you can have problems. The biggest problem is encountered when the crankshaft is allowed to hit the surface of the oil. Under these circumstances the crankshaft will start to foam the oil and can entrain substantial amounts of air in it - oil frappe so to speak in spite of the fact that most premium oils have anti-foaming additives in them to avoid this situation. Anyway, 'oil frappe' loses its lubricating properties and, if not rectified, will F.U. your bearings pretty quickly. Best to avoid this situation.

Brillo hit the nail on the head, cavitation of the oil and inducing air into it , you want 100% oil in your galleries , not 50 % air ...

coke foam in the nasal cavity hurts like hell... I don't know why I thought of that just now.

[Silveravant]

A little more than 1/6th of a quart won't hurt anything.

[KJack]

coke foam in the nasal cavity hurts like hell... I don't know why I thought of that just now.

At first I didn’t realize you were talking about Coca Cola. When I saw “coke” plus “nasal cavity”, I immediately thought you were talking about the white powder known as “the devil’s dandruff”!

[Theiceman]

lol no ...

[B7S3wannabi]

I'm sure a small amount of overfill is OK because there is likely some margin between the max level and where you can have problems. The biggest problem is encountered when the crankshaft is allowed to hit the surface of the oil. Under these circumstances the crankshaft will start to foam the oil and can entrain substantial amounts of air in it - oil frappe so to speak in spite of the fact that most premium oils have anti-foaming additives in them to avoid this situation. Anyway, 'oil frappe' loses its lubricating properties and, if not rectified, will F.U. your bearings pretty quickly. Best to avoid this situation.

Bingo.
Just had a B7 drive in with the engine sounding like shit and the oil pressure light on. Come to find over 8 quarts of oil in the system. Performed oil change and luckily no major damage done.


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[Steelerhater37]

TURBO WILL BURN OFF EXCESS.
ZERO WORRIES!
As long as we’re not talking multiple qts over. Just start car & let sit while it blows it’s white smoke everywhere. This will shortly dissipate

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[a4lownslow]

Bingo.
Just had a B7 drive in with the engine sounding like shit and the oil pressure light on. Come to find over 8 quarts of oil in the system. Performed oil change and luckily no major damage done.


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I just picked up a b7 at auction and 20 miles home I was greeted with the oil pressure light. Pulled over, check oil (which was overfilled), restarted the car and light was gone. Continued another 20 miles to have the same issue. Got home and drained out 7qaurts. Performed a proper oil change and hoping the light will stay off.


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[ahotboy15]

if not wouldnt you think to inspect the car before you buy. who need a oil pressure problem no wonder its up for auction

[napaul]

Ahotboy15 eat a Dick and shut your mouth no one interested in your opinion!

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[Zingrox]

That's awfully aggressive

[80sGuy]

That's awfully aggressive

There's a good reason for the aggression if you look him up. Anyway, that oil will burn off before you know it. Just keep an extra quart in the trunk.

[gp_b7]

That's awfully aggressive

In this case, it's warranted

[a4lownslow]

if not wouldnt you think to inspect the car before you buy. who need a oil pressure problem no wonder its up for auction

Why are you still here.. lol. No one needs ahotboy problem, go away


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[EvolutionArmory]

if not wouldnt you think to inspect the car before you buy. who need a oil pressure problem no wonder its up for auction

You’re the last guy to say someone else has no common sense. Please go away. Why post in a forum where nobody will talk to you?

[a4lownslow]

You’re the last guy to say someone else has no common sense. Please go away. Why post in a forum where nobody will talk to you?

No kidding.. lol. And for the record I was completely aware Oil was overfilled just didn’t think it would be the cause of an oil pressure light, and still not convinced it is in my case, but hopeful


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[Brillo]

No kidding.. lol. And for the record I was completely aware Oil was overfilled just didn’t think it would be the cause of an oil pressure light, and still not convinced it is in my case, but hopeful

To suppliment my comments in post #6 above, it's plausible that overfilling (let's say by more than a 3/4 quart) could trigger an oil pressure light because when enough air gets entrained into the oil in the form of tiny bubbles, among other problems the oil pump has a difficult time pumping that crap and maintaining oil pressure, thus triggering the oil light. Another thing to keep in mind is that when the crankshaft starts to froth the oil, the volume of the oil increases significantly (due to the entrained air) which further exacerbates the crankshaft frothing situation. Therefore, if I were overfilled I would drain the oil to the proper level as opposed to "burning it off" (even though it's a royal PITA to do so).

[a4lownslow]

To suppliment my comments in post #6 above, it's plausible that overfilling (let's say by more than a 3/4 quart) could trigger an oil pressure light because when enough air gets entrained into the oil in the form of tiny bubbles, among other problems the oil pump has a difficult time pumping that crap and maintaining oil pressure, thus triggering the oil light. Another thing to keep in mind is that when the crankshaft starts to froth the oil, the volume of the oil increases significantly (due to the entrained air) which further exacerbates the crankshaft frothing situation. Therefore, if I were overfilled I would drain the oil to the proper level as opposed to "burning it off" (even though it's a royal PITA to do so).

Thanks for the detailed response, and that makes perfect sense! I was just shy of 7 quarts. I replaced the filter and oil yesterday and have yet to see the light this morning after 25 miles or so.

UPDATE: 90 miles no light


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[80sGuy]

Thanks for the detailed response, and that makes perfect sense! I was just shy of 7 quarts. I replaced the filter and oil yesterday and have yet to see the light this morning after 25 miles or so.

UPDATE: 90 miles no light


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Now THAT's overfilling compared to usual 5 quarts I normally use, plus an extra quart of Mobil 1 for safety in the trunk. Been using Castrol 5W-40 (Audi dealer serviced) since new and recently switched to Mobil 1 0W-40 European Car formula. We'll see how that goes. So far so good!

[a4lownslow]

Now THAT's overfilling compared to usual 5 quarts I normally use, plus an extra quart of Mobil 1 for safety in the trunk. Been using Castrol 5W-40 (Audi dealer serviced) since new and recently switched to Mobil 1 0W-40 European Car formula. We'll see how that goes. So far so good!

It blows my mind how a person can mess up such a simple task. I always use 4.8 quarts for an oil change in these cars. Castrol of Mobil 1 0w-40 has been my go to oil for the past 6 years in the 30+ Audi’s I’ve owned.


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[Brillo]

Now THAT's overfilling compared to usual 5 quarts I normally use, plus an extra quart of Mobil 1 for safety in the trunk. Been using Castrol 5W-40 (Audi dealer serviced) since new and recently switched to Mobil 1 0W-40 European Car formula. We'll see how that goes. So far so good!

Can't go wrong with M1 0W-40 Euro Car Formula - one of the best oils on the market!

[80sGuy]

Can't go wrong with M1 0W-40 Euro Car Formula - one of the best oils on the market!

Yep! Couldn't resist when Walmart online had them for $25, bought 2 jugs and got $25 off. So essentially I paid $12.50 per jug plus another $11 for the filter elsewhere. My indie guy did all the work and recycling the old oil for another $20. Cheapest oil-change in my life!