【DIY】🚙 How to make an oil changer♪ 

Make your own oil changer.
This is a method of draining oil from above.
The mechanism is simple and uses negative pressure.
---Material------------------------------
Air bleeding pump
PET bottles
Metal lid bottle
Inner diameter 6 mm Fuel tube
6mm Aluminum tube
4mm Annealed copper tube
Pipe cutter
Epoxy putty
-----------------------------------------