Oil level cold too high

[wanabe911 owner]

Had my oil changed at a local high end car shop. Not Porsche specific but lots of nice older cars. Been noticing lots of white smoke on startup and today I thought to check my oil level and found it quite higher than the upper mark.
Should I try and siphon some out with a fluid extractor?
Or just drain it and put new oil in?


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[wanabe911 owner]

Anyone?


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[rfuerst911sc]

Looks like aprox 1 quart overfilled . I would drain or suck out a 1/2 quart and drive it and check again . Checking the oil after sitting overnight gives the most accurate reading.

Did the car smoke before the oil change ? Were you running synthetic or conventional oil before ? And what did they put in ?

[wanabe911 owner]

Didn’t smoke before.
Sometimes after sitting for a long time it would smoke a bit on startup.
Conventional oil before change and after change.


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[Tobra]

Drain some out, maybe ask them about it

[wanabe911 owner]

Thank you I think I will ask them about it.


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[Dave at Pelican Parts]

Generally, up to a half-quart over is not regarded as a problem. A full quart over might be.

If you've got an easy way to do it, just siphon out a half-quart or so and see how it goes. Make sure to take a sniff of the oil, though. If it smells strongly of fuel, the oil is diluted and you should not drive the car any more until you change the oil and figure out how the fuel is getting in there. (It's often caused by a very very rich mixture.)

--DD

[wanabe911 owner]

Looking up the invoice, I actually had it in for a new clutch cable.
They added 4 quarts of 20w50 dino oil and a Wix 51085 filter.
Here is the best part. I thought this was recently, it was actually 12/9/24! And if my odometer is correct I have driven it 170 miles in that time. My car has dual carbs that were rebuilt when I purchased it.


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[wanabe911 owner]

So I checked my owners manual and it says 3.7 quarts or 3.2 quarts
My engine was a 1.8
When I had it rebuilt we made it a 2056cc
How much oil should I add when changing my oil?


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[rfuerst911sc]

Originally Posted by wanabe911 owner

So I checked my owners manual and it says 3.7 quarts or 3.2 quarts
My engine was a 1.8
When I had it rebuilt we made it a 2056cc
How much oil should I add when changing my oil?


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Does the manual say 3.2 without filter change and 3.7 with filter change ? When the engine was rebuilt was anything added like an extended sump or oil cooler ?

[wanabe911 owner]

That’s what I thought it said should have taken a picture. No extended sump or external filter.


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[rfuerst911sc]

Change the oil/filter and add 3.5 quarts . Run it then let it sit overnight . Check the level next day and add as needed .

[wanabe911 owner]

Hats good advice thank you very much. Will report back.


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[Dave at Pelican Parts]

Does the oil smell like gasoline? If so, you've probably got a carb problem that is dumping raw fuel into one or more cylinders. Find and fix that problem before driving the car. (And change the oil regardless.)

--DD

[wanabe911 owner]

I’m going to check that today.


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[wanabe911 owner]

Oil smells slightly of gasoline


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[Dave at Pelican Parts]

Slightly is OK, and expected of carbs.

Carry on.

--DD

[wanabe911 owner]

Carry on I shall. Thank you!


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[wanabe911 owner]

Changed oil. Changed filter. Added exactly 3.5 quarts. Took a short drive. Parked it.
Checked oil this morning and it’s over the second line.

Took a picture but the oil is so clear it doesn’t show on the picture.


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[wanabe911 owner]

Here




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