therocket

Hi guys, last weekend I changed engine oil on my X (it was really dark after only 2500 miles) and I could fill only with 4.5 liters of new oil. Old oil was drained correctly (car was well warmed up and I let it drain for over 10 minutes), but I think that there's always a big amount of old oil that stays in the oil cooler. In fact, new oil became immediately darker, mixing with the old oil.

So, next time I want to drain all the old oil also from the cooler: someone knows if there's a screw on/near the cooler that makes this operation easier or do I have to remove directly the oil pipes coming to the cooler?

Thanks in advance for your suggestions.

Stefano