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Couple of thoughts
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Posted by whitesaab (more from whitesaab) on Tue, 6 Jun 2006 14:38:06 Share Post by Email
In Reply to: Thanks - you are right, I didn't drain the block..., '92 900tc, Tue, 6 Jun 2006 06:31:19
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Different coolants are not compatible, and can gum up your cooling system with catastrophic results. Never mix lifetime coolant with one you mix with water. Green and red coolants DO NOT MIX. Not sure if the blue is red or green compatible. Prefer a complete and proper flush replaced with Zerex G 05 Mercedes type coolant. If you had one in there and did not completely flush it out you will have problems if you mix the two. The block drain housing acts as a depository for scale and junk that build up over time in the system. If you do not remove it and clean it out, flushing will loosen it up and you will have junk circulating in a short time clogging up your thermostat and wreaking havoc. Spend a few bucks and buy the proper gasket for the plug housing. Use a bit of sealant only to hold the gasket onto the housing itself, and to help it seal onto the block. If you try to use just sealant it will leak. My advice is to start over and do it right, or one day you will have an unexpected overheating and possible head gasket job ahead of you. Also a good time to replace the thermostat, don't forget to buy the proper three stage one, and orient it with the air weep valve on the top..... Good Luck!

posted by 65.8.128...

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