Gear Oil Filling

Gear Oil Filling: Pressure Filing A Transmission

This technique is dangerous so proceed at your own risk.

To make a pressure filler using the oils container itself you'll need:

A rubber stopper large enough to fit snugly in the oil containers opening
See through tubing
Some zip ties
Low pressure air source

Make 2 holes in the rubber stopper that the tubing can fit snugly in.
In one hole insert a length of tubing so it can reach the bottom of the container and long enough to reach the transmission filler hole. This is the oil outlet hose.
The other hose only needs to be inserted a little. This is the air inlet hose. Attach the other end to an air valve witch is attached to your air source.
Put the stopper in a fresh bottle of oil and use zip ties to hold it to the bottle. Redline oil bottles actually have 2 divots in the bottom witch helps prevent the zip ties from slipping off.
Apply pressure (1 or 2 psi) to the short tube and oil will exit from the long tube. Remember don't use to much pressure or the bottle will explode. You really don't need to be in a hurry. If you make the tubes long enough and have the air source regulated at 1 or 2 psi you just plug everything together and wait for the empty bottle hiss.

A pictures worth a thousand words...

I used 2 kinds of tubing because that's what I had.

Pros : Quick and clean. A quart in less then a minute.

Cons : Could be dangerous.

What I would do different : I would make the air pressure tube diameter smaller and the oil tube larger for quicker transfer. Get a number #4 stopper instead of the #5 shown (I had to trim it a little to fit).

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