Mixed measurements when checking oil - AudiWorld Forums

A8 / S8 (D3 Platform) Discussion Discussion forum for the D3 Audi A8 produced from 2003-2010 and Audi S8 produced from 2006-2010

Mixed measurements when checking oil

Thread Tools Search this Thread
Old 08-15-2014, 06:24 AM   #1
Audiworld Junior Member
Thread Starter
Join Date: Aug 2014
Posts: 16
Default Mixed measurements when checking oil

Hi Everyone

Audi S8 - 2007 - 5.2L

When I check the oil dipstick when the engine is cold I get a very full oil reading, a touch overfull! When I drive to the gas station, let the car set for a few minutes while filling up, then check the oil, I get a reading at the top of the middle dotted pattern, 3/4 full.

The manual says "at operating temperature, let the car idle for a few minutes, then wait a few minutes before you check the oil." What does that mean? Run the engine till the coolant is temp is 90 (operating temp), then turn off and wait a few minutes, or just turn the engine on for a few minutes?

What's the accurate way of checking oil level on the S8? Cold engine, Short drive, Confusing Instruction Manual?
Bart247 is offline   Reply With Quote
Old 08-15-2014, 06:30 AM   #2
AudiWorld Super User
uberwgn's Avatar
Join Date: Sep 2009
Location: MA
Posts: 5,131

I've yet to see an Owner's Manual that suggested the oil is checked cold.

If you review your Owner's Manual, you will see that the mfr wants the level checked 5 minutes after a hot shutdown. They suggest while you are fueling the car, for example.
uberwgn is offline   Reply With Quote
Old 08-15-2014, 06:56 AM   #3
AudiWorld Member
Panelhead's Avatar
Join Date: Mar 2014
Location: Houston Texas
Posts: 497

Ithink that oil viscosity has a lot to do with this. The hot oil will run back down the dipstick tube quicker. With cold oil, pulling and wiping off will give a false reading the second time.
Panelhead is online now   Reply With Quote
Old 08-15-2014, 07:32 AM   #4
AudiWorld Super User
mishar's Avatar
Join Date: Nov 2010
Location: Vancouver, Canada
Posts: 6,792

On a leveled surface start the engine, let it idle for a bit (10 seconds is enough), shut it down, wait a bit for oil to settle down (10 seconds is enough) and measure it. Temperature is irrelevant because all expansions are less than accuracy of a dipstick measurement. Whoever thinks that temperature, idling, singing to it is relevant can test it himself.

Oil level difference between overnight settled and just turned off engine comes from oil filter and oil cooler draining back to the pan.
mishar is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
:: ECS Tuning :: NEW!! B8 A4 2.0T ECS Baffled Oil Catch Can ECS Tuning-Audi A4 (B8 Platform) Discussion 14 12-23-2016 03:46 AM
correct Crankshaft seal size lotuseleven 12v V6 Discussion 6 10-07-2015 03:27 PM
Electrical confusion Baikal A8 / S8 (D2 Platform) Discussion 3 09-11-2015 10:05 AM
:: ECS Tuning :: NEW!! B7 A4 2.0T ECS Baffled Oil Catch Can ECS Tuning-Audi A4 (B7 Platform) Discussion 0 09-01-2015 09:16 AM
:: ECS Tuning :: NEW!! B8 A5 2.0T ECS Baffled Oil Catch Can ECS Tuning-Audi Audi A5 / S5 / RS5 Coupe & Cabrio (B8) 0 09-01-2015 08:27 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -8. The time now is 06:34 PM.

  • Ask a Question
    Get answers from community experts
What's your question?