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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHOil Level: Guage vs. Dipstick
Leading reported evidence
Use guage regularly, very accurate
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Read evidence and context
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Performed · outcome unconfirmed · Original poster
In my 964, I use the guage regularly, very accurate.
Leading evidence: 'Use guage regularly, very accurate' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check dipstick' (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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Suggestion
the for sure accurate is the dipstick, but i just check the electonic gauge and only check the dipstick on rare occassions (e.g.
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Suggestion
the for sure accurate is the dipstick, but i just check the electonic gauge and only check the dipstick on rare occassions (e.g.
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Suggestion · Original poster
When I check my guage when the engine's cold, the level is on the (very) high side.
Check oil consumption and 10 minutes worked very well
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Read evidence and context
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Suggestion
I experimented with it and the dip stick extensively to check the oil consumption and 10 minutes worked very well on fully warmed up engine (to get consistent reading with the dip stick reading).
Check oil consumption and 10 minutes worked very well
No successful repair reported for this finding.
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Read evidence and context
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Suggestion
I experimented with it and the dip stick extensively to check the oil consumption and 10 minutes worked very well on fully warmed up engine (to get consistent reading with the dip stick reading).
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15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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This may have been talked to death, but I couldn't find it in a search. When I check my guage when the engine's cold, the level is on the (very) high side. However, when I check it engine hot and engine off for 5 minutes, it registers on the (very) low side.
How accurate is this guage? In my 964, I use the guage regularly, very accurate. Is the 996 this accurate.
I don't want to beat a dead horse, if you can direct me to the thread, I'll gladly read it.
I think they are pretty accurate in general (mine is very accurate, '03 coupe). 5 minutes may not be enough for all the oil to drain back to get an accurate reading. I experimented with it and the dip stick extensively to check the oil consumption and 10 minutes worked very well on fully warmed up engine (to get consistent reading with the dip stick reading).
If that doesn't work, I can't think of a rational explanation (reading hi AND lo at diff times).
it does shift around one or two bars between first thing in the morning to after a day of driving let's say.
the for sure accurate is the dipstick, but i just check the electonic gauge and only check the dipstick on rare occassions (e.g. right after an oil change).
That's about what it is...probably more like 3-4 bars. You've answered my question. I'm probably not waiting long enough. Figuring 1 bar is only .25 liters, it's pretty tight so 2 bars probably should be expected.
Thanks!
Sounds a little odd to me too. I played around like Ahsai above, with about the same result (2003).
Mine reads lower cold, and "peaks" at about 10 minutes after shutting off a hot engine. Difference cold to hot is typically 2 bars.
Oh, I forgot to mention, if you shut down the engine when it's very hot (say right after spirited driving), wait for 10 minutes and measure, you WILL get a little higher reading both at the dipstick and the gauage (~1 to 2 bars higher, 1/8 inch higher on the dipstick) compared to the cold reading. This is probably due to oil expansion when the temp rises, I believe. Similar to what Jon996 experienced above.
I prefer to read the oil level in cold conditions, before starting the engine.
The dipstick and the board computer offers the same reading
After waiting 10 minutes the meassure is about two or three bars..
I changed the oil last month and I added 8,60 litter (with filter).
In cold always one bar below the maximun
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Not certain, but I believe the oil level sensor is a self-heating thermistor.
Since the oil temperature varies in operation over a very wide range, the Kombi
instrument performs some calculation to correct the thermistor value against
temperature.
It's not a completely exact science.
Bill
