Need help: '03 X5 transmission fluid capacity

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I have a '03 X5 3.0i. I need to know the how much fluid is replaced with a simple drain and re-fill of the transmission.

I drained the fluid and forgot to capture it in a separate pan so that I could measure how much came out. Doh! I've found several sets of instructions that indicate you fill it up to the fill hole, then start the engine and engage each gear, then top up from the fill hole as necessary.

Well I tried that and when I opened the fill hole with the engine running trans fluid came shooting out everywhere!

I don't think I've put enough back in, but according to the procedures I've found I've put too much in. I put about 2 qts back in before I started it, it seemed like a lot more than that came out.

The tag on the side of the trans indicates it is a GM part No. 96024222, anyone know what trans that is? A google search turns up nothing.

If anyone can help me get the right amount of fluid back in my trans I would be grateful.