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When is the oil level gauge accurate?

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YOUR RESEARCHWhen is the oil level gauge accurate?

Leading reported evidence

Use dipstick

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While the gauge is "nice to have", I use the dipstick before the first start of the day.
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When is the oil level gauge accurate?

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Check oil

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Suggestion
I check the oil before first start of the day, with the dash gauge.
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When is the oil level gauge accurate?

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Leading evidence: 'Use dipstick' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check oil' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Check oil

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Suggestion
I check the oil before first start of the day, with the dash gauge.
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When is the oil level gauge accurate?

Check oil is

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Suggestion
The best time to check the oil is after the car has been sitting a long time (overnight).
Original post Read captured discussion
When is the oil level gauge accurate?

Check other fluid levels while you're in the engine compartment

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Suggestion
It takes seconds and you can check other fluid levels while you're in the engine compartment.
Original post Read captured discussion
When is the oil level gauge accurate?

Run maybe 5 minutes (not up

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Suggestion · Original poster
Both of these times, I have filled up on the way home from work, the engine was running for maybe 5 minutes (not up to temp) and it was about 45-50 degrees ambient out.
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When is the oil level gauge accurate?

Frequently discussed actions (5)

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Check oil

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Suggestion
I check the oil before first start of the day, with the dash gauge.
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When is the oil level gauge accurate?

Check oil is

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Suggestion
The best time to check the oil is after the car has been sitting a long time (overnight).
Original post Read captured discussion
When is the oil level gauge accurate?

Check other fluid levels while you're in the engine compartment

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Suggestion
It takes seconds and you can check other fluid levels while you're in the engine compartment.
Original post Read captured discussion
When is the oil level gauge accurate?

Run maybe 5 minutes (not up

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Suggestion · Original poster
Both of these times, I have filled up on the way home from work, the engine was running for maybe 5 minutes (not up to temp) and it was about 45-50 degrees ambient out.
Original post Read captured discussion
When is the oil level gauge accurate?

Use dipstick

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While the gauge is "nice to have", I use the dipstick before the first start of the day.
Original post Read captured discussion
When is the oil level gauge accurate?

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6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

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POST 1 / ORIGINAL POSTEROriginal post

The last couple of times that I've gone to get gas at this one gas station I've noticed that my oil level after filling up is indicated just around the minimum mark. Both of these times, I have filled up on the way home from work, the engine was running for maybe 5 minutes (not up to temp) and it was about 45-50 degrees ambient out. The oil level was measured after about 5 minutes of sitting there during the refuelling process. When I shut off the car after driving into work (20 minutes; car gets up to temp; some highway driving) and wait for the countdown timer, the oil level gauge indicates about 1/2 quart low of full. Which reading should I believe? I'll probably add 1/2 quart anyway (just to be safe) but I'm curious that the level can vary so much with basically just the temperature of the oil.

POST 2Original post

I check the oil before first start of the day, with the dash gauge. After fully warmed, and at operating temp, the dash gauge will read 3 bars down, which is equivalent to 3/4 qt.

POST 3Original post

When the engine has been fully warmed up and then shut down for the time required to check it. When you park it the night before and then get out in the morning to start it (as long as it is a level surface) you will get an accurate reading. That will give you the most accurate reading since the warm oil has had all night to settle.

POST 4Original post

LVDell is correct, regardless of what Porsche says. The best time to check the oil is after the car has been sitting a long time (overnight). I am so glad that I am illertrate so I don't have to follow the sometimes stupid recommendations in the manual. I would rather rely on common sense and experience.

POST 5Original post

While the gauge is "nice to have", I use the dipstick before the first start of the day. It takes seconds and you can check other fluid levels while you're in the engine compartment.

POST 6Original post

Just re-filled. FWIW, 1 bar in the display is equivalent to 250 mls just to restate and reconfirm.

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