B8.5, oil change, full 7 quarts?

[ThoseRings]

I remember reading while searching that doing an oil change via/ drain plug/ new filter you can safely put in 7 quarts and not have to worry about the level being "too high".

Am I correct in this understanding?

[Nelson G]

Do you have a dipstick? No matter which way you change your oil there will always be some oil left in the engine. I do not use the oil level system in the MM system. As soon as I purchased the S4 I purchased a dipstick and trust that more than an electronic sensor can go bad. Something old works better than new technology.

[ShelbyM3]

I remember reading while searching that doing an oil change via/ drain plug/ new filter you can safely put in 7 quarts and not have to worry about the level being "too high".

Am I correct in this understanding?

I wouldn’t trust it. It’s so subjective. Why not spend another minute to check?


Sent from my iPhone using Audizine Forum

[a4darkness]

This is the dipstick for our cars.

https://www.fcpeuro.com/products/aud...ick-06e115611h

[Nillious]

If just drop in the full seven qts it’s going to be slightly over maximum. I dump in a little over 6 qts. Start and let it warm up. Shut it down and turn ignition back on with hood open. Then I add oil till the level on mmi is full. Never had an issue and always use just shy of the seven qts. Also this way lets you check the sensor every change. If it says full too soon or says low after the oils all in you know the sensor is wrong.

[jordancl]

I put in 7qts for my last 3 oil changes without issue. Before that I was putting in shy of 7qts and adding the little leftover after a couple of hundred miles.

[Smac770]

The oil change fill volume for the CTUB is 6.8 L aka 7.2 qt. So putting in 7.0 qt is exactly what I'd put in and call it done. I like the oil level display to be just below full so I can see any movement anyway.

[BucDan]

I always do 6.5, then start the engine for a bit, turn it off, then add until max on the dip stick, so I end up around 6.8qts added. It's never going to be perfect as oil is still sitting in other areas of the engine. A little overfilled won't do much. If you a quart over, yes you've overfilled, but doing a spill and 7qt fill will not hurt anything.

[ThoseRings]

Do you have a dipstick? No matter which way you change your oil there will always be some oil left in the engine. I do not use the oil level system in the MM system. As soon as I purchased the S4 I purchased a dipstick and trust that more than an electronic sensor can go bad. Something old works better than new technology.

This is the dipstick for our cars.

https://www.fcpeuro.com/products/aud...ick-06e115611h

Yes, I bought the ECS billet dip stick, did not want the plastic one due to issues with melting/have to store it vs. leaving it installed.

I wouldn’t trust it. It’s so subjective. Why not spend another minute to check?

If just drop in the full seven qts it’s going to be slightly over maximum. I dump in a little over 6 qts. Start and let it warm up. Shut it down and turn ignition back on with hood open. Then I add oil till the level on mmi is full. Never had an issue and always use just shy of the seven qts. Also this way lets you check the sensor every change. If it says full too soon or says low after the oils all in you know the sensor is wrong.

I put in 7qts for my last 3 oil changes without issue. Before that I was putting in shy of 7qts and adding the little leftover after a couple of hundred miles.

The oil change fill volume for the CTUB is 6.8 L aka 7.2 qt. So putting in 7.0 qt is exactly what I'd put in and call it done. I like the oil level display to be just below full so I can see any movement anyway.

I always do 6.5, then start the engine for a bit, turn it off, then add until max on the dip stick, so I end up around 6.8qts added. It's never going to be perfect as oil is still sitting in other areas of the engine. A little overfilled won't do much. If you a quart over, yes you've overfilled, but doing a spill and 7qt fill will not hurt anything.

My truck takes 6.9 qt. and I always put the full 7 qts. in, it's always been at the full line with no issues over a many oil changes now.

I am asking because 6.8 vs. 7qt. is not much "extra" oil and I remember reading other members just doing the full 7 qts. when pulling the drain plug.


If I was sucking out the oil I would start with 6.5 and add till full...but I am not.


Thanks everyone for the feedback, going with the full 7 and going from there.

[Smac770]

Where do you guys just make up these numbers from? Full is 7.2 qt, not 6.8 qt. That's the oil amount Audi says to put in after the proper oil extraction process. 7.2 qt aka 6.8 L. Audi does not intend regular oil change by removing the drain plug. The engine is designed for extraction.

The B8.0 CCBA 3.0T is 6.6 qt. The B8.5 CGXC / CTUB 3.0T is 7.2 qt.

[bass_lover1]

Capacity is 6.8L or 7.2qt. I just put in 7 quarts and haven’t had problems with that.

[BucDan]

Where do you guys just make up these numbers from? Full is 7.2 qt, not 6.8 qt. That's the oil amount Audi says to put in after the proper oil extraction process. 7.2 qt aka 6.8 L. Audi does not intend regular oil change by removing the drain plug. The engine is designed for extraction.

The B8.0 CCBA 3.0T is 6.6 qt. The B8.5 CGXC / CTUB 3.0T is 7.2 qt.

I don't doubt the dry fill being 7.2qts, but suction or spilling will not get all of the oil out anyway because half a quart is still sitting in the engine, and I doubt dealers or anyone has the patience to wait an hour for everything to drop to the pan to get sucked out or spilled. I've spilled, let it drip for an hour until it stopped, then filled it with 7 quarts, ran the engine, turned the car off to let sit for 30 minutes and measured with a dip stick, I was still overfilled by half a quart or so. Does it hurt the car between then and the next suction or spill? No, but I know it's still overfilled because I measured it.

But I get it, they made it easy so the average person wouldn't have to worry if it was over filled.

[Smac770]

The oil capacity quoted by Audi USA is for an oil and oil filter change operation, not a new off the factory line engine fill.

Which dipstick are you using? rev E, rev H, or rev N? Or are you using some China market stick, rev J, rev L, or rev M? Another thread said E and H were the same length from "top" to end of the stick. But to end of the stick is a useless measurement. So the stick says you have too much oil, but is the stick correct for the engine.

What's always been curious about the modern era EA837 (Cxxx engine codes, not including the EA837evo), once you throw out the erroneous values AoA put in 2038129 and removed in the final version, is the T40178 values are the same for all of them: 132 ring, 13 full, 0 min. That means 421mm from top of dipstick tube to full, and 13mm from full to min. But they all use the same dipstick tube and same lower oil pan.

3.2L CAL (C6.5, B8.0) - 6.9qt
3.0T CCA (C6.5) - 6.9qt
3.0T CCB (B8.0) - 6.6qt
3.0T CJW (4L.0) - 7.2qt
3.0T CTW (4L.5) - 7.2qt
3.0T CGX (C7.0, B8.5) - 7.2qt
3.0T CTU (C7.0, B8.5) - 7.2qt

The Q7 (4L) never had the digital display system, it was not on MLB platform. So it had a stick. And the 4L 3.0T used the rev N stick. The CCA was only in the C6.5, which also was not MLB, so no T40178 values either. It used the rev H stick.

Now, the different classes of oil capacity spec do differ in one regard, the upper oil pan. They all use tube 06E 115 630 B (previously A) and lower pan 06E 103 604 K. The 6.9qt engines use upper pan 06E 103 601 J (C6.5) or 06E 103 601 K (B8, updated with hole for oil level sensor). The 6.6qt CCB uses the same rev K upper as the 6.9qt CAL. If the CCB was to hold less oil, the T40178 values would have to be moved to measure at that different oil level. But the values are the same. So are the values wrong, or is the capacity wrong, or is there something else at hand?

The community of actual 3.2L/3.0T possessors would have to experiment and see what's actually what with their engines. Do a full extraction and oil filter change, then put 6.5qt in, run it up to temp, off, wait 10 min, see where on the T40178 lower scale the oil ends up. Do that in a 3.2L CAL, 3.0T CCB, 3.0T CGX, and 3.0T CTU and see if they all end up at the same mark with 6.5qt in. Because Audi's workshop manuals says they are all "full" at 13mm. Which means to me, they have to all have the same oil volume in them.

The B8.5 7.2qt is probably a bad copy/paste from the Q7 getting the 3.0T and having more oil (common for the Q7 versions). But it would require someone to set a rev H and a rev N stick alongside each other to see if/how they actually differ.