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Re: [TowerTalk] Oil for Dummy Load

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Oil for Dummy Load
From: Howard Hoyt <hhoyt@mebtel.net>
Date: Mon, 30 Nov 2015 10:44:48 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
>>Does anybody have an opinion about using brake fluid ?

You were smart to use DOT 5, being polysiloxane based it absorbs very little moisture.

Most common DOT 3 and 4 brake fluids are polyethelyene glycol and absorb moisture. Repeated thermal cycling will draw air in and out of the can, and potentially allowing enough airborne moisture to accumulate in the can and sink to the bottom, causing corrosion. This is the reason for most corrosion in brake calipers and wheel cylinders, and is most likely the source of the pinhole leak at the bottom of these types of dummy loads as well.

Howie - WA4PSC


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