In David Lesher
wrote:

Bert writes:


Not cooking oil; vegetable or animal derived oils will go rancid over
time and don't handle really high temperatures very well. Mineral oil
is much more appropriate.

transformer oil can be toxic and is difficult to find

Traditional transformer oil contained PCBs. The new stuff doesn't.

MFJ sells 1 gallon bottles for $30.

There's been no PCB's in transformer oil (or anything else
sold...) since 1979. GE is still trying to clean up the Hudson
River.

I'm old enough that products introduced in 1979 still count as "new
stuff."

--
Bert Hyman W0RSB St. Paul, MN