Date: Tue, 11 Jun 2002 20:33:46 +0100 From: "JD" <jonathonnopsameditch_AUNTY_SPAM_.com> Subject: Re: FILL COOLANT FLUID
Keith (and all), I have been supplied with Saab Orange (or could be amber) Long Life Coolant Anti-freeze. a 50/50 mix with water gives protection down to -40 deg C (not much chance of that here in west Wales!). According to Saab UK I can mix it as I am only really topping it up. Keith when you say 'H' motor I assume that you mean 4 Cyl. also If I was to flush the system what do I flush with ?, Water ? Gee, this whole coolant thing has become alot more complicated than I thought. This thread has been a real eye opener. thanks Jonathon "KeithG" <noonenopsamhlink.net> wrote in message news:ae514h$mec$1nopsam9.atl.mindspring.net... > Green 'can' be mixed with amber (merc) and blue (saab) as they are similar > base chemistry, but not with pink/orange (dexcool) as it is a completely > different chemistry and vice versa. If it were my car, I would not mix at > all, but flush and fill with Mercedes coolant period. It is proven and is > pretty cheap insurance. It may be too late for every Saab out there with an > H motor, but, at least after the head gasket is replaced, it will not happen > again with regular coolant replacement (2-3 yr). > > Saab head gasket failure is due to poor corrosion inhibitors in green > coolant. There is a steel former embedded in the head gasket sandwich. When > it rusts through, the gasket can 'bulge' near a coolant passage (usually > between #1 and the chain cavity) Once it bulges, it is in need of replacing. > The corrosion is 'enhanced' by coolant with bad chemistry for the > combination of iron and aluminum (in most all current engines). Basically, > when the gasket is soaked with coolant, the steel former in the middle > between an aluminum and iron electrodes, the rusting of the steel former is > accelerated. In addition, this process can chemically etch the block or > head, though the head is usually 'worn' by the seal ring as the gasket > looses strength and allows movement here. Merc coolant (G05) is a 'good > thing' (tm) for any car with Aluminum and iron in the cooling system. > > KeithG > > "JD" <jonathonnopsameditch_AUNTY_SPAM_.com> wrote in message > news:1023749481.16820.0.nnrp-12.9e981281nopsam.demon.co.uk... > > Ok, > > > > I have ordered some from Saab 4l for £19.86 +VAT. what happends if it's a > > different colour from what's inside the expansion tank already ? According > > to goran's last post I can't mix green stuff with orange stuff. I think > that > > I have green stuff. I'll report back tomorrow eve. > > THX > > JD > > > > >
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