Author	[Modern View]
Lyle Pfeifer 10-13-2012 01:29:37 50.95.182.137 Report to Moderator	Drained the fluid out using drain on low point at the lower left side of the block. Added the new antifreeze a little at a time...2 total gallons of antifreeze with 1.5 gallons of water. Ran it a bit to mix it all up and noticed the temp gauge that has only registered a couple of needle widths from cold in normal operating to about 2 needle widths from hot. I am thinking the water has air locked. Anyone have a solution for this or an idea on how to get it full again? I hate to run it much more until I get a chance to get the air out as I do not need another rebuild........ [Reply]   [No Email]
Lyle Pfeiffer 10-16-2012 08:19:15 66.243.238.13 Report to Moderator	Re: Model 40 replacing anti-freeze in reply to Lyle Pfeifer, 10-13-2012 01:29:37   I am using extended life Prestone. I added a little water, then some antifreeze, then water, then more antifreeze until it was full, but it is short 1/2 gallon which led me to think air lock. I will drain it and premix as that is what the service manual said, but I thought it would mix OK the way I did it. It is the type lacking the water pump. Thanks for the replies. Lyle [Reply]  [No Email]
M-MAN 10-13-2012 08:33:16 184.39.144.12 Report to Moderator	Re: Model 40 replacing anti-freeze in reply to Lyle Pfeifer, 10-13-2012 01:29:37   Thermosiphon systems can't tolerate that. If you don't drain it back out and mix it before putting it back in you won't have to worry about a rebuild. The head or block will be busted. You need another half a gallon of water while you're at it. [Reply]  [No Email]
jCarroll 10-13-2012 08:29:23 75.22.113.218 Report to Moderator	Re: Model 40 replacing anti-freeze in reply to Lyle Pfeifer, 10-13-2012 01:29:37   Just so you don't miss the point ...... Premix the water and antifreeze. Unless you live in Nome, I would use 70% water. [Reply]  [No Email]
greenday 10-13-2012 06:07:38 216.145.156.69 Report to Moderator	Re: Model 40 replacing anti-freeze in reply to Lyle Pfeifer, 10-13-2012 01:29:37   Yep you should premix the antifreeze before you install it [Reply]  [No Email]
donjr 10-13-2012 05:44:22 72.71.177.74 Report to Moderator	Re: Model 40 replacing anti-freeze in reply to Lyle Pfeifer, 10-13-2012 01:29:37   Don't worry about it. It will mix itself. Just warm it up and it will start to circulate on it's own. As long as it doesn't overheat, you're good to go. [Reply]  [No Email]
gtx1967jewison 10-13-2012 07:16:05 174.253.140.144 Report to Moderator	Re: Model 40 replacing anti-freeze in reply to donjr, 10-13-2012 05:44:22   If it is a thermosiphon system with no water pump it WILL NOT mix itself, the antifreeze is denser & sinks to the bottom like a slug & blocks the circulation. It WILL overheat & damage the head, head gasket, or worse. You must drain it & mix first. [Reply]  [No Email]
donjr 10-13-2012 17:00:52 72.71.177.74 Report to Moderator	Re: Model 40 replacing anti-freeze in reply to gtx1967jewison, 10-13-2012 07:16:05   Never had anything like that happen with decent antifreeze--- [Reply]  [No Email]
lfnel 10-13-2012 03:36:09 173.27.205.97 Report to Moderator	Re: Model 40 replacing anti-freeze in reply to Lyle Pfeifer, 10-13-2012 01:29:37   I'm pretty sure the 40 is a thermo-syphon cooling system, that is no water pump. It won't mix the anti-freeze and water very well, if at all. You should have mixed it before putting it in. Were I you, I'd drain it out, catch it, mix it and reinstall it. I suspect it didn't get up to normal operating temperature because you didn't run it long enough. It takes a while and probably even some load to warm it up. I doubt that running non-mixed could have damaged anything, but not really sure about that. [Reply]  [No Email]