Date: Mon, 10 Jun 2002 20:56:51 +0000 (UTC) From: "SimonJ" <Menopsam.net> Subject: Re: FILL COOLANT FLUID
> > Is the Merc coolant better than the Saab factory coolant for some > reason ? The Saab coolant is much easier for me to get around here > and I'm planning on a flush and fill soon. > The merc coolant is said to be better for the head gasket, as it contains an additive that prevents formation of crystaline deposits. The reason this is good for a Saab is that the aluminium head expands at a different rate to the cast block, and hence you get minute sliding movement at the head gasket joint. If you have crystaline deposits in the joint, they act a grinding paste, and eventually wear away the gasket.
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