[Test-Equipment] Dummy load

[J. Forster]

Pure mineral oil is available in drug stores and supermarkets. It is sold for
medicinal purposes (laxative). Since it's USP, it's unlikely to contain the
kinds of additives that motor oil and others may have.

-John

Brian Clarke wrote:

> Go easy on the mineral oil. Many mineral oils contain soaps
> and other compounds that are fine for the original purpose.
> But, mineral oils can form unusual compounds with the
> carborundum and change its resistive characteristics
> permanently. Better to stick with a product designed for the
> job.