[PSUBS-MAILIST] Mineral Oil substitutes

[Alan via Personal_Submersibles]

Brian,
I have bought a few 20 litre cans of different types of mineral oils that
were recommended to me by industrial chemists. Even though they
were meant to be very pure (low in aromatics) they were softening plastics
when I was using them in motors.
With any alternatives, I would be careful that they don't yellow in time. With
the powerful LEDs they can put out a lot of heat that probably helps with
yellowing & deterioration of plastics.
I am using silicone in my motors. I believe that Emile went over to silicone
for thrusters a while back.
Alan

> On 19/02/2019, at 4:05 PM, Brian Hughes via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Oil compensation and biodegradable alternatives - especially for lights - any ideas? Hank uses vegetable oil. What about filtered biodiesel or diesters. Suggestions?
> 
> Brian
> 
> Get Outlook for Android
> 
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