40 below radiator additive

turborich

turborich

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Well after reding some post on here about the 40 below product being the best thing to use for helping to cool the engine down I figured that I would try it. We did it to (2) mark VIII's at the same time and followed the directions exactly. All I can say is that it didn't do anything! Doesn't run any cooler at all. I used distilled water and everything like it called for. IMO this stuff is junk! It's been around 115 degrees here and both of the marks are running warm in the day time. Getting up to the (N) on the gauges. Both of them! It seems that this is about 235-240 at the engine. I used a handheld infrared thermometer to find out the temp at the front of the engine near the water pump. All I can think of is that the high ambeient temps are just too much. The heat radiating off of the ground is around 160-165 degrees. Does anyone eles live in the desert where it's 110+?? how hot does your mark run? Also the radiator fans are working properly, the cooling systems are clean and there is NO air in the system.
 
running a cooler thermostat and a way to turn the fan on at a cooler temp too?
 
**IF** everything is working correctly, and you have these problems, you need to start considering a better radiator.

Of course this is assuming that everything is working correctly.

Before going that far, you might want to at least blast out the AC condensor from the back to clear any debris. Check your radiator's cooling fins as well to make sure that they are not clogged.
 
Dominus said:
**IF** everything is working correctly, and you have these problems, you need to start considering a better radiator.

Of course this is assuming that everything is working correctly.

Before going that far, you might want to at least blast out the AC condensor from the back to clear any debris. Check your radiator's cooling fins as well to make sure that they are not clogged.
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If what Dominus said does not work and you are going to buy a radiator they have these new 4core heavy duty ones that are same ones used in the taxi/police pkg sold from the dealers and trust me here in New York in midtown traffic we get about the same temp during rush hour.
 
Yeah, the Midtown Tunnel was at least 120 degrees today and traffic was not moving. I just kept watching my needle move, but it was held in place by my electric water pump. :)
 
Thanks guys, Well everything is working as it should on both cars. I am now considering a new larger radiator. I will be calling a local radiator shop that I use to get a price in the next few days. As far as the turning the fan on, well its always running at full blast since my a/c is always on.
 
I live in NM, it was 105 on my porch today (side note: the official temp, taken at the airport, is usually anywhere from 5-15* cooler than it is in the city itself, at least where I live.) Anyway my Mark's temp gauge only works half the time, a problem I should really get off my butt and fix, but when it is working it doesn't get up to the halfway point. When I got the car I cleaned all the debris out of the radiator and straightened all the fins that I could.
 
It got up to 108 degrees today here in Wichita. it's been 102-108 the last week here and with 50-70% humidity. now that's freakin' HOT!! my Mark has been running at the half way to slightly above half way even today at 108 degrees.
 
...I have to ask, are you absolutely sure you bleed every bit of air out of the system? Because, even just a little bit will cause my engine to run on the warm side, and my entire cooling system, from the hoses to the radiator, to the water pump, is all brand new.
 
what is the best way to bleed air from the system if the crossover tube will not open?
 
my 98's needle is right at the middle....i still wanna upgrade my cooling system, just too freaking hot in the summer down here, 110+ for the last two weeks...... + humidity ............. :(
 
no humidity here, only about 9-12%. But 113-117 in the shade. Yes all of the air is out. Both of the cars only run hot in the days when it's really hot. It seems as if the entire US is hotter this year! It seems like a awfull large engine for such a small 1 core radiator. I'm going to try to get a 2 row aluminum. Also the car doesn't get hot all at once, it slowly creeps up and then it stays there, if I turn the a/c off it will cool down but I need my a/c!!!
 
Your radiator may be plugged. It should not run that hot. Get rid of the stock junk one with crappy plastic tanks and get an 03-04 cobra radiator.
 
DonLino said:
Your radiator may be plugged. It should not run that hot. Get rid of the stock junk one with crappy plastic tanks and get an 03-04 cobra radiator.
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Is it a direct fit?
 
You have to get EVERY single drop of the former coolant out of the system totally. I mean ALL of it. I ran compressed air and a blow dryer in th end of the hose for a LONG time. It has to be pure as pure can be.
 
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The directions dont say that, It says to drain the radiator and then add 1 gallon of 40 below and 1 gallon of distilled water. So that's how we did it. You did use antifreeze, correct?
 
From what I have read and been told, 50% of your cooling is from your oil. You may want to think about an oil cooler with an electric fan. They can be mounted almost any place away from the radiator. Do you run a trans cooler? If so maybe you should by pass the radiator cooler and plumb it to the cooler only. If its mounted in front of the radiator it will heat the air entering the radiator even more.
Good luck!
Raoul
 
ONEBADMK8 said:
Dexcool
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I have personally had to flush the sludge out of 5 cars because that crap was in there. I hate Dexcool, it is :q:q:q:q.
 
Ditto's on the Dexcool!
I run 40% Dexcool and 60% distilled water with a bottle of Redline water wetter. After 6 or 7 flushes with distilled water. A pain but worth it.

Raoul
 
DonLino said:
I have personally had to flush the sludge out of 5 cars because that crap was in there. I hate Dexcool, it is :q:q:q:q.
Click to expand...

I run dexcool in everything I own for about 8 years now or more. Not one problem under any conditions. Dexcool doesn't make sludge.
 
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