What if you overfill oil?
#1
Rennlist Member
Thread Starter
What if you overfill oil?
Can you damage anything if you overfill oil by a couple of quarts? TIA.
#2
A couple of quarts? Don't know. Usually it's just a quart, or so and it ends up getting back into your intakes via the breather line from the tank. That fouls the Idle Stability Valve (ISV) causing a poor idle and, sometimes, running problems.
The ISV is easy to clean. The intakes, themselves, a bit more work.
Though, no damage that I've heard of.
The ISV is easy to clean. The intakes, themselves, a bit more work.
Though, no damage that I've heard of.
#5
Nordschleife Master
Yes , it can do real damage .
If that oil gets into a cylinder and locks it , something will have to give .
If that oil gets into a cylinder and ups the compression ratio to high , something will have to give .
You do not want a slug of raw oil getting into a cylinder .
The vent for the oil tank goes into the intake system .
An overfill can get out via the vent hose .
If that oil gets into a cylinder and locks it , something will have to give .
If that oil gets into a cylinder and ups the compression ratio to high , something will have to give .
You do not want a slug of raw oil getting into a cylinder .
The vent for the oil tank goes into the intake system .
An overfill can get out via the vent hose .
#6
RL Technical Advisor
Indycam is right.
At the VERY least, excess oil gets pushed into the intake manifold to be burned and that really piles on heavy carbon deposits on the head surfaces as well as piston crowns which significantly reduce the threshold of detonation.
It doesn't go away, either.
I would strongly recommend that you drain some oil from the tank to the correct level on the dipstick (not the gauge).
At the VERY least, excess oil gets pushed into the intake manifold to be burned and that really piles on heavy carbon deposits on the head surfaces as well as piston crowns which significantly reduce the threshold of detonation.
It doesn't go away, either.
I would strongly recommend that you drain some oil from the tank to the correct level on the dipstick (not the gauge).
#7
Addict
Rennlist Member
Rennlist Member
+1. Get the oil level between the marks, or risk a lot of problems. Same is true on any car - an over-filled wet sump engine will overload the oil rings, and the oil turns to whipped cream by the spinning crankshaft.
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#8
Rennlist Member
If you've overfilled by 2 qts, then just drain the oil out of your engine case; around 2 qts will come out. Problem solved.
If you remove the oil tank plug to try removing 2 qts, PLEASE put the video on youtube because I'd love to see you try to get the plug back on after 2 qts have come out.
If you remove the oil tank plug to try removing 2 qts, PLEASE put the video on youtube because I'd love to see you try to get the plug back on after 2 qts have come out.
#9
Rennlist Member
If you've overfilled by 2 qts, then just drain the oil out of your engine case; around 2 qts will come out. Problem solved.
If you remove the oil tank plug to try removing 2 qts, PLEASE put the video on youtube because I'd love to see you try to get the plug back on after 2 qts have come out.
If you remove the oil tank plug to try removing 2 qts, PLEASE put the video on youtube because I'd love to see you try to get the plug back on after 2 qts have come out.
He couldn't get he plug back in (it was very hot too- the oil and the plug) and it looked like the Exxon Valdez; OIL EVERYWHERE- the approx. 1 qt. container he used to catch the oil oddly enough would not hold 12 qts.
#10
Rennlist Member
Thread Starter
Drained about 5 qts - Start the car - lots of smoke. Oil level gauge on the bottom - let the oil temp warm to second tick (8 Oclock) - add a quart of oil, nothing, let runn a little, nothing - add another quart - Full. Check the dipstick - Nothing. I think the gauge is screwed up. The oil that I drained was definetly dark enough to read on the dipstick (warm, idling, level, etc) Sometimes when I turn the key w/o starting the car the gauge is pegged at the top - manual says this is a short...... I'm taking it for service Tues.......
#11
I've drained some oil from the drain plug. Just loosen it a bit and the oil starts to drizzle out. If you don't pull the plug all the way out it's no problem to tighten it back up. You'd be surprised how fast the oil will come out even without removing the plug all of the way.
#12
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Drained about 5 qts - Start the car - lots of smoke. Oil level gauge on the bottom - let the oil temp warm to second tick (8 Oclock) - add a quart of oil, nothing, let runn a little, nothing - add another quart - Full. Check the dipstick - Nothing. I think the gauge is screwed up. The oil that I drained was definetly dark enough to read on the dipstick (warm, idling, level, etc) Sometimes when I turn the key w/o starting the car the gauge is pegged at the top - manual says this is a short...... I'm taking it for service Tues.......
#13
Rennlist Member
Thread Starter
I actually drained the 5 quarts with the oil not warmed up - about two quarts came out - then I put the plug back, started the car briefly, then more was available to drain out...quickly! You are right - I dont think I could have done it with hot oil - not so much getting the plug started - but the hot oil burning my fingers.
#14
Go to your local DIY store, buy a pumps that fits into the chuck on your drill, add two lengths of plastic tube, one end into the oil tank via the filler the other into an empty oil container, within 1 minuts. problem solved. No mess, no fuss... Easy old game...
#15
I siphoned out a quart recently after my first oil change
I recently watched someone do that; "Oh, I'll just let a little surplus oil out by removing the plug- WTF!!?!"
...so good
My oil is so hard to read on my dipstick, as it looks like...well, fresh oil. Is their a secret?
I recently watched someone do that; "Oh, I'll just let a little surplus oil out by removing the plug- WTF!!?!"
...so good
My oil is so hard to read on my dipstick, as it looks like...well, fresh oil. Is their a secret?