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Re: Rusty colored coolant (1990 900s) Posted by Peter Martin [Email] (#3037) [Profile/Gallery] (more from Peter Martin) on Sun, 1 Jul 2012 13:26:05 In Reply to: Rusty colored coolant (1990 900s), James B., Sun, 1 Jul 2012 12:02:37 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Rusty coloured & not muddy brown coloured? With the engine running, are there bubbles in the expansion tank? When the engine has cooled for a while, pull the spark plugs & see if any of them are remarkably cleaner than the others. The rough running could be caused by the moisture spraying on the cap. WD40 will displace the moisture but dry the cap thoroughly before reinstalling. A can of compressed air works well if a compressor is not available. What was the colour of the coolant prior to this misadventure? It should be blue if you are utilising the correct Saab coolant.
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