The fluid you are trying to get rid of has to be up HIGHER than the bucket you are flowing into. Hand Siphon Pump UK Gearzaar Upgraded New Easy Use. [ Premium Quality Rubber ] -- Rubber hand pump that starts siphoning liquid flow quickly.
eBay
Aquarium Air Pump USB Rechargeable Oxygen Pump Fish Tank Bubbler Quiet Operation Automatic Start-up for Indoor and Outdoor
Aliexpress UK
Fast suction port enables to transfer 2.6 gallons per minute, make refueling more quickly and easier. Maximum Flow Rate: 2.6 Gallons Per Minute. Waterproof one-button switch allows to transfer liquids quickly and safely without leakage and waste.
eBay
Silent Oxygenator Small Oxygen Pump Portable Mini USB Charging Fish Tank Oxygen Pump Fish Farming Aquarium Supplies
Aliexpress UK
1 x Oil / Diesel Extractor Pump. Easy Operation，Just change the oil by connecting to 12V DC battery, no need specialised tools. Suitable for extracting engine oil, diesel etc from a vehicle (don't use for petrol).
eBay
Portable Electric Self-Priming Hand Electric Drill Water Pump Micro Submersibles Motor Ultra Home Garden Centrifugal Drill Pump
Aliexpress UK
No need to worry about seized-up sump plugs, misaligned oil trays and rivers of black muck running off in every direction. Professional Oil Extractor Pump to Get the Oil on Easy Servicing. 1 x Oil / Diesel Extractor Pump.
eBay
1Pc DC 3.7-6V Micro Vacuum Air Pump 370 Model Negative Pressure Pump
Aliexpress UK
Introducing the GADLANE Car Oil Extractor Pump, the ultimate solution for effortless and efficient oil changes due to the robust 12V/80W motor. Versatility is key, and this oil pump extractor is suitable for various vehicles and applications.
eBay
DC 12V High Pressure Diaphragm Water Pump Multifunctional Mini Booster Pump For Water Washing Machine Agricultural Irrigation
Aliexpress UK
Cold and heat proof. Ideal for transferring a wide variety of liquids.
eBay
Portable miniature diaphragm vacuum pump for filtration of liquids, sample gas collection, oil-free pressure pump
Aliexpress UK
Professional Oil Extractor Pump to Get the Oil on Easy Servicing. Lightweight and Portable: compact size for easy storage anywhere and transport. Clean and Fast: two clear thicker and flexible hoses can keep looking at the fluid extraction process.
eBay
12V 7A 10L/min High Pressure Agricultural Electric Water Pump Water Sprayer Pumps Dual-Core Power Agricultural Electric
Aliexpress UK
1 x Oil / Diesel Extractor Pump. Easy Operation，Just change the oil by connecting to 12V DC battery, no need specialised tools. Suitable for extracting engine oil, diesel etc from a vehicle (don't use for petrol).
eBay
NICEYARD Mini Heavy Duty Self-Priming Hand Electric Drill Water Pump No Power Required Home Garden Centrifugal Pumps
Aliexpress UK