Maybe I can shed some light on additives for radiator leaks?
I once owned a '70 Jag XJS V12 and normal maintenance was to add two(2)
satchels of Bars Leak to radiator after flushing out. I never had a problem
with leaks.
Also, semi-trucks (aka: 18 wheelers), often use a radiator additive available
at any truck stop for leaks in their cooling systems. I can not think of the
exact name at the moment, but it wasn't expensive and worked great. It was
something similar to Bars Leak, or might have actually been the same thing but
was available in a powder form.
I would not put a whole container of this in a Healey radiator but just enough
to do the job. It very well could assist someone in a temporary repair of a
leaky casting plug or radiator. Good enough for $20k engines, should be good
enough for a Healey engine.
Patrick
BJ8
Subject: Re: [Healeys] radiator leak
To: Healey Mail List <healeys@autox.team.net>
Message-ID: <4A32A08F.8090006@ix.netcom.com>
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My BJ7 had a radiator leak I could never manage to get a solder to keep
shut. At various times over the years I tried stop leak products. Most
seemed to put in some sort of particulate material that would swell
somewhat in water. Some worked -more or less- for a time.
Over the years my faithful beast ran hotter and hotter. When I finally
tore down the engine in year 25 I found the dead spaces in the water
jacket - around the base of each cylinder and up as much as half way- to
be filled with a deposit roughly the texture of soggy newsprint. Fine
insulation preventing cooling.
So I do not recommend commercial stop leaks. However, I must admit that
the pepper idea sounds intriguing in that I suspect it would stay in
suspension and not deposit.
Cheers,
Pete Pollock
Palo Alto, CA, USA
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