run straight coolant

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Why would you want to so this? In general, heat transfer is compromised compared to a water mixture, as is freezing point. Most automakers specify a maximum concentration and there's a reason they do so.

For reference here are a few threads on waterless coolants, including one you started a year or two ago:

https://bobistheoilguy.com/forums/ubbthreads.php/topics/4338324/Waterless_Anti-freeze#Post4338324

https://bobistheoilguy.com/forums/ubbthreads.php/topics/4038277/Evans_waterless_coolant#Post4038277

https://bobistheoilguy.com/forums/ubbthreads.php/topics/3699927/Waterless_coolant#Post3699927

https://www.bobistheoilguy.com/forums/ub...ant#Post4491106
 
No one should be doing this. Aside from the reasons mentioned already, straight (near 100%) coolant actually has a much higher freezing point than 50/50 mixed with water. Use de-ionized water or distilled water, or buy premixed from dealer.
 
Never run straight coolant it doesn't transfer heat very well. Ideally straight DI water is the best coolant due to its ability to absorb heat, however using pure water leads to lubrication and oxidation issues. Most race tracks especially for motorcycles ban the use of coolant and will check you radiator to pass tech they only thing allowed is water wetter (purple ice or redline water wetter for example)
Question is why would you want to do that, just run what the OEM recommends, don't try to out think the automotive engineers, they test vehicles in severe conditions for a reason, plus running 12 or 14 quarts of pure coolant is way more expensive than diluting it.
 
If you dont do a complete block flush and drain and only do the petcock or lower hose removal.. you can run straight coolant then drain at a later date and install the 50/50 mix. There is a bit of coolant that doesnt get removed in a lower radiator drain so you wont technically be running 100 percent coolant if you just fill the rad with straight unmixed coolant.
 
I ran 80-90% water + RL WW during hot summers on one of my old muscle cars that ran "hot." Would never think of running beyond 60-70% straight coolant. What's the advantage?
 
Why you think glycol coolants not allowed on race track? Reason has nothing to do with which better, reason is strict ly to do with glycol spills are very slippery. Period, end of discussion. Water wetter garbage fine for track events where you changing it out constantly. Go peddle your water wetter elsewhere.
 
Apparently you didn't read about how the discussion (that we were all obviously having about why water wetter is so great
whistle.gif
) was ended.

No need to respond further
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Originally Posted By: FordCapriDriver
I run premixed 20-30% coolant 80/70% water green gycol coolant in everything i own.


if you use less than 30% coolant or more than 70% coolant it can cause issues

30/70 is a good compromise for hot climate.

70/30 is for best freezing protection

50/50 for most climates is great.

disclaimer I am talking about normal stuff, green,pink,red,orange,blue etc.

not including exotic "waterless coolant" etc.
 
Originally Posted By: fredly
Why you think glycol coolants not allowed on race track? Reason has nothing to do with which better, reason is strict ly to do with glycol spills are very slippery. Period, end of discussion. Water wetter garbage fine for track events where you changing it out constantly. Go peddle your water wetter elsewhere.

Do we know you as a previous and different member of BITOG?
 
I use 60/40 coolant/water. Because I think it gives me a higher boiling point, lower freezing point, less corrosion, lasts longer.
 
Some genius I work with put straight coolant in his car. One night when I left work it was 10 degrees out and he started the car to get it warmed up. About 10 minutes later it quit running and I never seen that car again.
 
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