Hi All
A few weeks ago I assisted Plesbit with a bit of a service on his AD41, during which time we used his Pela 6000 oil extractor (on of the ball shaped ones). It took ages to get the oil out (well over an hour if my memory serves me).
This weekend was my engines' turn to get new lube, and Wayne had kindly lent me his extractor, which just happened to be the same type as Simons. Having done a few oil changes at DRL last year, using one of the tall cylindrical extractors, I was pretty convinced these had a lot more suck, and so bought one from Peachments on Saturday.
As a direct comparison, I set Wayne's extractor on the stbd engine, and my new one on the port. In the time it had taken my new extractor to fill to 6 litres, empty it, and then get another 2.5 litres (about 20 mins), the ball type extractor had only managed to suck out less than 2 litres.
The only problem with the cylindrical type extractors seems to be the pipes aren't quite long enough to reach the bottom of the sump, so about 8.5 litres plus the oil filter capacity was all I managed to get out. Some longer pipe needs to be sourced!
If anyone wants to borrow it anytime, just ask!