Instead of the "standard" ATF drain & fill where about 5 Liters (out of what, 8.5L?) are replaced I decided to take a shot at replacing 100% of the ATF as outlined in the procedure by SYFI in the 1st post of this thread.. I have 15 liters of ATF now, even though 14 should suffice because, why take a chance? And you can buy this German-made & Mercedes-approved ATF on EBAY for less than half what the genuine Mercedes fluid costs. I thought I'd have to soak the ATF-cooler-return-line in penetrating-fluid overnight but nope. You can see my flare-nut wrenches around the union of the return-line and it came apart very easily, no doubt because of my He-Man level of strength, right? Oh Hell, I might as well say the real reason... my superior manliness. There. It feels good to speak the truth at last! I left the drain-bolt off the pan so it can continue to drip until I can get back to it. The liters that came out still looked nice & red and didn't have any kind of odd smell. Here's some pictures to tickle your fancy...