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Author Topic:   Antifreeze
Dirt Full Roller

Total posts: 53
posted October 17, 2005 08:27 PM  
I will be storing my car outside this winter. How much anti-freeze is needed for proper protection!

Steve Dupree
Dirt Freak

Total posts: 316
posted October 18, 2005 03:45 AM  
Well most of the time just read what it says on the back but depending on where you are at just put straight antifreeze and run motor and dont worry about it. If you are worried about it pull hoses and use air and blow the system free of all liquid and then put hoses back on and leave nothing in it. Yea it gets pretty cold here too heck last winter i think we had on day it got down to 18 lol. But that was the beginning of are winter season so we had to run. Be good and have a great winter.

Dirt Freak

Total posts: 255
posted October 18, 2005 05:22 AM  
Antifreeze needs water mixed in it.
According to to radiator shop here antifreeze needs to be at a 50/50 mixture to be at it's best.
He showed me the figures last fall, I can't remember the exact figure but it was around 20 degrees colder before frezzing with the proper mixture.

Drain some of the radiator get the mixture close, let it run for 20 minutes or so, shack the car a little also so it gets mixed up good in all the engine pockets.

Dirt Freak

Total posts: 374
posted October 18, 2005 07:22 AM  
Drain the radiator and take the block drain plugs out and you won't have to worry about freezing ever.

sc1 racing
Dirt Freak

Total posts: 419
posted October 18, 2005 09:10 AM  
if you just drain block you will get a rust build up that can come loose and block small passages, clog radiator, and destroy water pump..

anti freeze dosent have to be 50/50 they just recomend that because 50/50 is good up to -34. straight antifreeze will do nothing more than never freeze.

at the end off the year i put in some castol purple cleaner run it, then drain and add 3 gall of antifreeze then top off with water. take out ther/restrictor so it will flow faster. then if not doing any engine work loosen all rockers, or run 2 times a week. so it doesnt weaken valve springs....

Dirt Full Roller

Total posts: 50
posted October 18, 2005 03:14 PM  
Actually straight anti-freeze will freeze and it freezes at a higher temp then a 50/50 mix will. It has to do with the way that the water and antifreeze mix and the new molecular formula that is created. If this question would have been asked 2 years ago i would have been able to go into great detail. Seeing as how I took Chemisty 2 three years ago and don't need to know these figures for work they have long been forgoten but if someone would really like I could still probably look them up in my book just to lazy to do that right now.

James Ott
Dirt Maniac

Total posts: 131
posted October 18, 2005 07:52 PM  
We get the idea.... please don't bother LOL

Dirt Forum Racer

Total posts: 94
posted October 18, 2005 10:11 PM  
Pour all the antifreeze in the radiator, ok. Then fill it to level with water(or H20, for all you rocket scientists). Then start your car up, and run until your car is to normal operating temperature. Then shut the motor have now successfully completed winterizing your motor. I find it funny that valve springs pressure is backed off during the winter, ......they run the living **** out of them, but people back them off so the cold weather doesn't ruin them, Is that not odd to anybody? I prefer to run the car at least once a week, and keep it out of the elements.

sc1 racing
Dirt Freak

Total posts: 419
posted October 18, 2005 10:17 PM  
you take pressure off the valves so it doesnt hold a few shut for 3-5 months collapsing the spring..

i went a bought a gal of anti freeze and put in the subway freezer..thanks to my g/f being the manager. but any way 3 hours latter at -48 degrees still no freezing. so straight antifreeze should be safe in us..just use cation for you alaska racers.

Steve Dupree
Dirt Freak

Total posts: 316
posted October 19, 2005 05:20 PM  
Yeppers straight will not freese as soon if you need to check do it yourself the way sc_1 did then you will have your answer. Just have to love those chemist that think they know everything. Check it out and then tell us if you have something to help other drivers. I could care less with are temps here but i dont give people improper jestures if i can help it and we do run in Jan. here!!!!!!!!!!!! The best is drain the d--m thing and blow it and dont worry about it and seal it back up. Oh be sure to remove carb after pouring tranny fluid in it running so it doesnt rust also then just change plugs in the spring and go to racing......... Add half tranny fluid and water and do a carbon blast and then rev moter and add tranny fluid maybe 8 oz. and then shut it off and it will be fine and get rid of alot of carbon if you are not going through it over the winter

Dirt Freak

Total posts: 255
posted October 20, 2005 05:46 AM  
Did some research on this last night, I went to Prestone and Serri and a couple of other Research place's and here are some charts and quotes that I found:

"Ethylene-Glycol and Propylene-Glycol should be at least 50% and less than 60% of the coolant for best cooling performance and 68% or less for the best freeze protection with slightly reduced cooling performance"

Boilover and Freeze-up Protection

SIERRA Water Freeze Point
(Ice Crystals Form) Boiling
40% 60% -4F 249F*
50% 50% -26F 256F*
60% 40% -54F 261F*
66% 34% -76F 262F*
*Closed System; 14 psi caps
(Chart heading got pushed together, first column antifreeze%, second column water%, third freeze point, fourth column boiling point)

My thought, If you want to keep water in it, drain most of the radiator and add the antifreeze and run it for a while.
The one site says not more than 68% antifreeze for the best freeze protection, but it doesn't tell what the straight will freeze at.

[This message has been edited by Flanndad (edited October 20, 2005).]

leddy #33
Dirt Full Roller

Total posts: 32
posted October 20, 2005 01:52 PM  
Based on those numbers, antifreeze does not cool better than water, and straight anti freeze will offer the best freeze protection.

Of course straight antifreeze is unneccesary but adding water lowers its freeze protection capabilities.

[This message has been edited by leddy #33 (edited October 20, 2005).]

Normal Sullivan
Dirt Full Roller

Total posts: 39
posted October 20, 2005 09:03 PM  
Those numbers don't say anything about whether antifreeze cools better. Just what temperature it BOILS at,

Dirt Freak

Total posts: 255
posted October 21, 2005 05:08 AM  
Your right Normal, it really doesn't say anything about the best cooling, it does talk about boiling point, I plan on still running Distilled water with water wetter.

But to Leddy #33's point about straight antifreeze offering the best freeze protection, the quote from Prestone said 68% or less for the best freeze protection.

James Ott
Dirt Maniac

Total posts: 131
posted October 21, 2005 04:40 PM  
We had frost last night. Put the antifreeze in and ran her until she was good and hot. My thought was if it's supossed to be wet leave it that way. NO corosion with antifreeze and the water pump stays wet. I usually look at things this way: If the pros and cons are equall they cancel eachother out... then let logic make your choice for you.

[This message has been edited by James Ott (edited October 23, 2005).]

Dirt Maniac

Total posts: 116
posted October 23, 2005 08:50 AM  
Heres an idea... For those of you who dont want to drain the rad. and engine, mix in antifreeze just like you would your daily driver. You guys are right it is not rocket science. If it is good enough to keep your driver alive, then it is good enough for your racecar.

Dirt Roller

Total posts: 24
posted November 02, 2005 03:53 AM  

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