

John Dow 20 Gal Fluid Evacuator - Venturi Vacuum Oil Extractor
SKU: JDI-20EV
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JohnDow 20 Gallon Fluid Evacuator Overview
Draining oil from underneath a lift, or crawling under a car with a pan, works but it's slow and messy. The JohnDow 20 Gallon Fluid Evacuator pulls fluid out through the dipstick tube instead, using a venturi vacuum system powered by your shop air. Hook up the hose, open the valve, and you're pulling oil in minutes, without lifting the vehicle or getting underneath it.
The 20-gallon tank and 14-gallon suction capacity mean you're running several vehicles through before you have to stop and empty it. Steel construction and oil-resistant wheels hold up to daily shop use, and four swivel casters make it easy to roll between bays. A sight tube on the side shows you exactly where your fluid level sits, so you're never guessing when it's time to drain the tank.
This automotive oil extractor handles more than engine oil. It works as a transmission fluid evacuator, pulls coolant and hydraulic fluid, and covers marine engines and small equipment too. One unit, several jobs, no separate tool for every fluid type in the shop.
Key Features & Benefits
| Venturi Vacuum Extraction | Pulls fluid through the dipstick tube in minutes, no lift or crawling required. |
| 20-Gallon Tank Capacity | Run multiple vehicles through before you need to stop and empty the tank. |
| Sight Tube Fluid Level Indicator | Check your fill level at a glance instead of opening the tank to guess. |
| Four Swivel Casters, 7-inch Wheels | Roll the evacuator between bays without wrestling it into place. |
| Steel Construction, Oil-Resistant Wheels | Built to hold up under daily shop use, not occasional garage jobs. |
Specifications
| Tank Capacity | 20 gallons |
| Suction Capacity | 14 gallons |
| Operating Pressure | 110-115 PSI |
| Suction Hose Length | 7 ft |
| Evacuation Hose Length | 10 ft |
| Weight | 55 lbs |
| Wheels | 4" swivel casters, 7" rear wheels |
What's Included
- 20-gallon fluid evacuator tank
- 7-ft suction hose
- 10-ft evacuation hose
- Sight tube fluid level indicator
- Four swivel casters, 7-inch rear wheels (pre-mounted)
Applications
This fluid evacuator earns its spot in the shop by covering more than one job. It's built for:
- Engine oil changes on cars and light trucks
- Transmission fluid extraction and replacement
- Coolant system maintenance
- Hydraulic fluid removal from equipment
- Marine engine servicing
- Small equipment maintenance
Questions Before You Buy?
Call us at (855) 498-2147. Our team can confirm compatibility and help you pick the right fluid evacuator for your shop, and we keep replacement hoses and parts in stock if you need one down the road.
Frequently Asked Questions
How is this faster than draining with a pan?
The venturi vacuum system pulls fluid through the dipstick tube in minutes, using your shop air at 110-115 PSI. No lifting the vehicle, no pan underneath, no mess to clean up afterward.
What size air compressor do I need to run this?
It runs on standard shop air at 110-115 PSI operating pressure, which is within range for most shop compressors already in use.
Can it evacuate transmission fluid, not just engine oil?
Yes. The 14-gallon suction capacity and venturi system pull transmission fluid the same way they pull engine oil, making it useful for transmission fluid extraction and replacement.
How do I know when the tank needs to be emptied?
The sight tube on the side of the unit shows your fluid level directly, so you can check the 20-gallon tank at a glance instead of opening it up.
What other fluids can this handle besides oil?
Coolant, hydraulic fluid, and fluids from marine engines and small equipment, in addition to engine oil and transmission fluid.
About the Brand
