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Tool Talk Discussion Forum

Should antifreeze be cut?

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DCM

10-21-2006 14:47:24

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Are the instructions on the antifreeze jug suggestions or recomendations when they say you can mix with water.Dan AB

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T_Bone

10-23-2006 02:21:01

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Re: Should antifreeze be cut? in reply to DCM, 10-21-2006 14:47:24

Hi Dan,

Another item to consider is you need buy the correct type of anti-freeze for the engine and/or fuel type. Diesel takes a different anti-freeze. One anti-freeze fits all is no longer valid. Buy the wrong type and you may very well eat the water pump seals or dissolve your radiator.

What burned my butt is last year I went to several parts houses and could not buy straight anti-freeze rated for diesels. I could buy pre-mix at twice the cost. I finally went to my Ford dealer and paid $10/gal for consentrated diesel rated anti-freeze.

I've always used distilled water with any elthlylene mix with a maximum 70anti-freeze/30 mix ratio. Propaylene Glychol can be water free and won't harm animals and has great thermal properties.

T_Bone

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B-maniac

10-22-2006 13:37:23

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Re: Should antifreeze be cut? in reply to DCM, 10-21-2006 14:47:24

From a profit standpoint,it wouldn't make much sense for the manufacturer to sell you a gallon of pure antifreeze and tell you to go get a gallon of FREE water to add to it to make 2 gallons of product ,now would it? If pure antifreeze would do the job correctly then they would sell you all you wanted and wouldn't bother telling you about the water. They finally did get smart,though,now they ARE selling you the antifreeze and water mix already mixed.For your convenience? NOT! Now you are paying for water. What a sweet deal,huh?

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buickanddeere

10-22-2006 07:48:53

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Re: Should antifreeze be cut? in reply to DCM, 10-21-2006 14:47:24

Distilled or de-min water to mix with the 100% anti-freeze. Tap, lake, ditch or dug well water just scales or sludges up the inside of the cooling system. Good make work projects for rad and engine shops however.

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dr.sportster

10-22-2006 07:34:15

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Re: Should antifreeze be cut? in reply to DCM, 10-21-2006 14:47:24

Buy an antifreeze hydrometer and you will readout the temp protection of the side of it.I bought one from the Snap-on guy for about fifteen bucks [which means its worth about 7.50 in an auto parts store].Without the hydrometer its just a guess what protection you have.

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Pooh Bear

10-21-2006 18:59:06

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Re: Should antifreeze be cut? in reply to DCM, 10-21-2006 14:47:24

This link explains it well.
This link explains it very well.

It has to do with the thermal properties of the liquid.
And the law of diminishing returns.
The lowest freezing point (-40 degrees) is obtained
with a 50/50 mix of antifreeze and water.
Go above 60% antifreeze and the freezing point
starts going back up. Full strength is about 10 degrees.

And watch the containers. Some of them come premixed.
Same price as full strength but it is half water.
Buyer beware.

Pooh Bear

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Stickler

10-22-2006 09:56:58

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Re: Should antifreeze be cut? in reply to Pooh Bear, 10-21-2006 18:59:06

You must get different antifreeze down there in the warmer climates. Here in Canada, we mix at either 60/40, giving around -60�F protection or at 70/30, which gives something like -75�F protection. Straight antifreeze will gel like diesel fuel does when it gets real cold. 50/50 mix just isn't good enough when we get temperatures well below -40 for sometimes weeks at a time.

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azharry

10-21-2006 17:49:35

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Re: Should antifreeze be cut? in reply to DCM, 10-21-2006 14:47:24

Always refer to the instructions on the antifreeze container. There are alot of products being sold now that are premixed to a 50/50 blend to allow for easier topping off and reduced price per container. Also beware of universal antifreezes. Although the antifreeze maker says its product will mix with everything, none of the oe manufacturers have embraced this concept. This is especially true if the vehicle is still under warranty. Straight antifreeze actually doesn't work as well as a 50/50 or 60/40 mix.

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CaptRon

10-21-2006 16:31:07

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Re: Should antifreeze be cut? in reply to DCM, 10-21-2006 14:47:24

The antifreeze for antifreeze is water, thus the 50/50 mix.

CaptRon

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bill mar

10-21-2006 16:29:31

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Re: Should antifreeze be cut? in reply to DCM, 10-21-2006 14:47:24

i think antifreeze mixed 50/50 with water actually protects to a lower temp. than straight.never figured out how by adding water that freezes at 32 degrees you can lower the freezing point.

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steve from mo - dangit!

10-22-2006 08:20:28

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Same thing as metal alloys. in reply to bill mar, 10-21-2006 16:29:31

The molecules join and have different properties than they did when they were separate.

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Stumpalump

10-21-2006 16:08:51

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Re: Should antifreeze be cut? in reply to DCM, 10-21-2006 14:47:24

The best cut is with distilled water. The minerals are distilled out and it slows corosion.

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rgvtx

10-21-2006 15:20:17

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Re: Should antifreeze be cut? in reply to DCM, 10-21-2006 14:47:24

Always cut your antifreeze per directions, in most cases 50/50. Never run it full strength as it can't displace heat like water does. Some think more is better but it's just not so with antifreeze. Buy one of those cheap antifreeze testers at your auto parts house to verify what temperature protection your at to avoid freezing. Add or remove antifreeze as needed to get to a sensible low temp. Remember if draining antifreeze don't leave it where any animals can get to it, it's very toxic and will quickly kill your favorite hunting or guard dog.

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135 Fan

10-21-2006 14:52:06

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Re: Should antifreeze be cut? in reply to DCM, 10-21-2006 14:47:24

Yes. A lot of people say it is not good to run straight anti-freeze.

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Don L C

10-21-2006 16:43:26

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Re: Should antifreeze be cut? in reply to 135 Fan, 10-21-2006 14:52:06

I bought a used Honda Motorcycle 700cc water cooled..... the water pump would squeal like a pig on start up....drained out the coolent,turned out to be pure antifreeze..... .added back 50/50 mix..... .end of problem.....

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Fawteen

10-21-2006 14:51:33

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Re: Should antifreeze be cut? in reply to DCM, 10-21-2006 14:47:24

It should be cut according to instructions, usually 50/50. Straight antifreeze will cause your engine to overheat, as it does not absorb heat as well as water does.

Some antifreeze comes already mixed, but it's much less cost effective that way, or at least it was the last time I checked.

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Slowpoke

10-22-2006 01:11:03

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Re: Should antifreeze be cut? in reply to Fawteen, 10-21-2006 14:51:33

I would say that MOST antifreeze now comes premixed, or as they say RTU....ready to use. It's getting harder and harder to find the concentrated stuff. I think it's about $10 a gallon for unmixed (you get two gallons out of it) and $7+/gallon for the RTU. Now the cost for your two gallons is $14. That's a 40% increase in price. Just another way to raise the price by diluting with water. All the manufacturers have jumped on the bandwagon. And don't get me started on food that's pumped up with water!

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williamf

10-24-2006 03:25:39

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Re: Should antifreeze be cut? in reply to Slowpoke, 10-22-2006 01:11:03

All those years I hated having to mix it, said I'd cheerfully pay more to be able to get it ready to use. Now I can and it kills me to pick it up off the shelf when the lower cost mix it yourself is right there next to it. What a whiner.
Wm

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DCM

10-21-2006 22:29:27

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Thankyou All in reply to Fawteen, 10-21-2006 14:51:33

I will be mixing.Dan

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