From what i've read, transformers can contain wood and various plastics. Transformer oil should also be compatible with motor enamel, copper, and various metals. The conductivity of this oil would also be as low as it could possibly get by it's nature, so we could figure that there's the lowest amount of risk of shorting phase or hall wires.In this thread we have someone quoting a German forum and claims that ATF eats wiring, then fork oil eats wiring and in the next sentence correlates fork oil with mineral oil. Seems to me fork oil has a range of formulations.
I had planned to use mineral oil, aka paraffin oil, also used as transformer oil for dielectric and non reactive properties around electrics with a few percent PTFE (and maybe <1% MoS2) in the little G311.
I'm curious if anyone here would know more about the feasibility of this idea. If there seem to be no problems, i propose this:
1) I collect a variety of different broken geared motors from forum members for testing. Ideally, i would have a pair of each type of geared motor.
2) I take extensive high resolution pictures of each motor 'before'.
3) I buy two different types of transformer oil and fill one half of the motors with oil #1 and the other half with #2.
4) I let the motors sit for 6 months, and swish the oil around once per month.
5) After the 6 month period, the oil is drained, cleaned off, and i take another series of high resolution pictures to assess whether any materials in the motor have been damaged.
We can then have a better idea as to whether transformer oil is an ideal fluid for cooling geared hub motors.
But first.. does the idea sound feasible?