anyone tried one of these oil extractor pumps that run off the battery? saw them in lidl: https://www.lidl.co.uk/en/p/car-care/ultimate-speed-12v-oil-pump/p41173 and as demo'd in this video: https://www.youtube.com/watch?v=qIOPSBPkeWs i was thinking about getting one of the manual hand pump...
I've used one of the manual, non electric pumps and it was excellent the first time. Next time it wouldn't create enough vacuum to suck all the oil out. Maybe that was due to bungs not being tight enough on main reservoir.