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Date:         Fri, 6 Oct 1995 12:02:37 CST6CDT
Sender:       Vanagon Mailing List <vanagon@vanagon.com>
From:         "Dan Houg" <fairwind@northernnet.com>
Subject:      coolant leak tracing

On 6 Oct 95, SyncroHead@aol.com wrote:

> Many shops now have the materials & tools to put dyes in the vehicle's fluids > (coolant, freon, etc.). These dyes can then be seen with a special light. I > don't know if it's a regular "black light" or something more exotic.

AND some list members have that stuff! i used it to prove to the dealer that it was indeed the crankshaft seal that was leaking oil. it was so dramatic, they went out and bought a unit for themselves! the dye in 'normal' green antifreeze is a close relative of the chemical florescene used in all sorts of UV work, we use it for tracing failing septic systems. anyway, while they do market a dye additive for coolant, the coolant already floresces under UV light. BUT even that is only marginally useful with coolant leaks because they are just plain easier to trace with your eyes... look for either a wet area or a whitish-green crusty area. often the coolant evaporates before it hits the ground.

-dan


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