2023 S5 Oil Capacity and MMI Discrepancy

[rrrave00]

I've just completed my first oil change at 5K on my 23 S5. I used a fluid extractor to remove the oil through the dipstick opening. I used all Audi supplied parts (filter and 508/509 oil). No where in the owners manual or on the Audi website could I find the listed oil capacity. On line tutorials stated it was 7.75 quarts as well as ECS Tuning which listed 8 quarts as sufficient. When I refilled the engine with 7.75 quarts the MMI doesn't show the oil all the way to the top of the graph. I also purchased an ECS Tuning dipstick and that shows the oil as just touching the absolute bottom of the dipstick. To be certain I added the correct amount of oil I called the dealership where I bought the car and they punched in my VIN number and stated the engine takes 7.7 quarts of oil. Can anyone explain why the MMI is not showing the graph as full? When I purchased the car and checked the oil the graph went all the way to the top. Also my fluid extractor is showing over 8 quarts of oil.

Thanks in advance

[Ian@SEM]

Mine usually takes about 7.5 litres for what it’s worth. You use an extractor so I can’t say this applies, but when I do a “good” drain it typically takes more.

[Smac770]

CWGD (B9 3.0T) engine oil refill for drain and filter change event is 7.3 L aka 7.7 qt.

Never assume aftermarket dipsticks are correct until you've proven them correct. The distance from top of dipstick tube to max mark for a CWGD is 474 mm. The distance from the max mark to the min mark for a CWGD is 16 mm. There is no Audi produced dipstick for the CWGD engine. They have only the T40178 calibration stick, which is used to validate the display calibration. So if you do an extraction, filter change, 7.7 qt fill, the oil level should be 474 mm down from dipstick tube opening, and the visual display should be at the top.

But that's why I never put in the full oil quantity either. I never want the display bar "full". Is it "full" or over full, how over full, etc. I want to see the top of the bar, and then see if/when that bar is moving over time.

So start by checking the physical oil level, and if that's as it should be, then move to why the display is not matching, maybe it needs adjustment, if that can be done.

[Gregory_Tolson]

Be happy you put the capacity in and the graph on the MMI doesnt say you are way over full. My A5 takes 5.2 liters. When I dump in 5 liters my MMI says I'm at the very top. This is after draining the oil from the bottom of the oil pan and not using an extractor. I want the graph to be at like 50-75% full. Either way, i dump in 5 liters, it says my Oil level is at the top and i leave it at that.

I even tested to see how much oil would fill 50%-75% of the graph. It was reading that after dumping in 4.5 liters, which to me seems too low if the capacity is 5.2.

I recommend driving the car for 25 minutes and checking the oil after that. Oil level will rise since its much warmer than running the car for a few minutes and checking.

[Z06Corey]

But that's why I never put in the full oil quantity either. I never want the display bar "full". Is it "full" or over full, how over full, etc. I want to see the top of the bar, and then see if/when that bar is moving over time.

When it's overfull, it says so. At least it used to. I don't know why it wouldn't still function the same on newer cars.

[Smac770]

When it's overfull, it says so. At least it used to. I don't know why it wouldn't still function the same on newer cars.

Yes, but I prefer information to be informative. Not "just go until it's broke and it complains". Yes, if it's excessively overfilled, it'll tell you, at some who knows point well above the display bar top. Same as it won't actually give you the "low, add a quart" message until the display bar has been empty for some time.

[Z06Corey]

Yes, but I prefer information to be informative. Not "just go until it's broke and it complains". Yes, if it's excessively overfilled, it'll tell you, at some who knows point well above the display bar top. Same as it won't actually give you the "low, add a quart" message until the display bar has been empty for some time.

Agree there, would never want it overfilled. Moreso just indicating that the system does tell you.

[SHCKR]

I've been putting 8 quarts in every 5K miles, at 65K now, no issues.

[kamabazi]

I've just completed my first oil change at 5K on my 23 S5. I used a fluid extractor to remove the oil through the dipstick opening. I used all Audi supplied parts (filter and 508/509 oil). No where in the owners manual or on the Audi website could I find the listed oil capacity. On line tutorials stated it was 7.75 quarts as well as ECS Tuning which listed 8 quarts as sufficient. When I refilled the engine with 7.75 quarts the MMI doesn't show the oil all the way to the top of the graph. I also purchased an ECS Tuning dipstick and that shows the oil as just touching the absolute bottom of the dipstick. To be certain I added the correct amount of oil I called the dealership where I bought the car and they punched in my VIN number and stated the engine takes 7.7 quarts of oil. Can anyone explain why the MMI is not showing the graph as full? When I purchased the car and checked the oil the graph went all the way to the top. Also my fluid extractor is showing over 8 quarts of oil.

Thanks in advance

I just did my oil change at around 1300 miles on my 2024 S5 and was able to extract almost 8.2 quarts, not sure how it is even possible but I took my time wiggle the hose which let it suck a little more oil. I believe if you just do a quick extraction you will get around 7.7/7.8 quart but if you take your time it will be higher like mine.

Anyway I put in around 7.5 quart based on known capacity but the MMI showed only 1/3 full from the minimum, put another half quart and now the MMI is showing 3/4 full from minimum. So with 8 quart it is still not at max since I was able to extract 8.2 quart. I am going to drive a few days and then decide if need to add any more. I have seen some people reported overfilling it based on what MMI initially reported after driving it a little. Seems total capacity in the engine is close to 8.2/3 quart and Audi reports less since the believe during normal oil change they may not take the time to remove all the oil.

[Guzzi]

I wonder how much the volume changes when comparing hot oil to cold

[kamabazi]

It should not but it seems to be in my case. I had put in 8 qt and it was still around 20% below the max mark but I did not fill anymore to avoid possibility of over filling. After driving to work for 30mins checked it and it was showing at the MAX. Checked the yesterday not with not really warmed up and it is back down the 80% fill. Will keep an eye for next week or so before adding any more.

[Gregory_Tolson]

This thread reminded me to pick one of these up lol. It was on backorder all last year. I'll report back in a week or 2 in how accurate it is to the MMI.
https://www.ecstuning.com/b-ecs-part...641ecs02-01~a/

[compprep]

I just did my oil change at around 1300 miles on my 2024 S5 and was able to extract almost 8.2 quarts, not sure how it is even possible but I took my time wiggle the hose which let it suck a little more oil. I believe if you just do a quick extraction you will get around 7.7/7.8 quart but if you take your time it will be higher like mine.

Anyway I put in around 7.5 quart based on known capacity but the MMI showed only 1/3 full from the minimum, put another half quart and now the MMI is showing 3/4 full from minimum. So with 8 quart it is still not at max since I was able to extract 8.2 quart. I am going to drive a few days and then decide if need to add any more. I have seen some people reported overfilling it based on what MMI initially reported after driving it a little. Seems total capacity in the engine is close to 8.2/3 quart and Audi reports less since the believe during normal oil change they may not take the time to remove all the oil.

I have a 2024 S5 about to do first oil change with a brand-new extractor just purchased. I see what looks like a tube were a dipstick would go, 2-3" from the filter housing, but CAN'T get the "plug" out of the tube. It spins. What am I missing here?

[Cdang]

I used pliers and pulled it straight out.

[compprep]

I used pliers and pulled it straight out.

OK. I'll try that.
TY!

[Smac770]

The V6 plugs seem to just be really tight. The I4 plugs actually have tabs that clip around the tube top, so you turn it 90° and pull. I guess the V6 plug, lacking any locking, is just made really tight fit.

[GoCougs1234]

I have a 2024 S5 about to do first oil change with a brand-new extractor just purchased. I see what looks like a tube were a dipstick would go, 2-3" from the filter housing, but CAN'T get the "plug" out of the tube. It spins. What am I missing here?

I'd be careful about using pliers - it's plastic and if you damage it you risk the vehicle not running correctly (it's hard to remove as it's held in with two o-rings - needed to hold vacuum otherwise the PCV won't work correctly) and if you drop the plug could be looking at a real PITA to find it in and amongst the inner works.

I use a very small screw driver through the hole in the top of the plug and then pull by hand like a t-handle to make sure I'm applying equal force.

[GoCougs1234]

I've also seen that 7.75 quarts doesn't quite peg the MMI oil level indicator. Probably lots of reason(s) - variation in the placement of the sensor, temperature of the oil, a visual buffer to prevent overfilling, etc. I don't worry about it and just put in 8 quarts and am done with it.

[compprep]

Did my first oil change this morning. 8625 miles/8months, Went well. That plug really comes out hard to use the brand new Schwaben 10.5-liter extractor purchased last week. Slow to start but seems if I pumped more for more vacuum went faster. SOOOOO much better than jacking up, jack stand, cardboard for the inevitable oil splash, etc.! 8 quarts to top of MMI at max.