I saw this stuff online and was wondering if anyone has tried it and if it has worked. I am a bit hesitant to try it out.

http://ptboutique.com/items/jeep-liberty/performance/coolant/Hy_-_Per_Lube_Super_Coolant_For_All_Models-detail.htm

Its soap.

Thats not possible if the thermostat is functioning properly.

May just contain a wetting agent. I would stay away. I think it's allowable to add a wetting agent yourself to your present antifreeze mixture.

Call or email a company rep for your brand of anti freeze. If possible he should have enough knowledge to reccomend or discourage it.

If you want some additional heat transfer reduce the antifreeze water ratio to the lowest safe value for your area. Basically the water component transfers heat better than the antifreeze component.

If you seem to have an overheating problem try chasing the cause. It usually only becomes worse with time otherwise. A normal system should function well enough if problems are not present.

I just read the ad and believe it is just a wetting agent. it provides somewhat more contact of coolant to metal or heat transfer. Very useful for cars to reducing hot spots sometimes depending on their cause. There is no history that I am aware of their being abnormal hot spots in these older diesel engines if not scaled up badly.

The thermostat maintains a minimum temperature. Even a properly functioning thermostat has its limitations when it comes to controlling maximum temps.

I run poly gycol sraight.boiling point is over 300 degrees,freezing minus 40 degrees. better for cavitation,stops hot spots.
old anti freeze is so out dated,like kerosene in Model Ts.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

Use the correct coolant/water mix per the manual. If you want to help cooling a bit, try RedLine WaterWetter a tried-and-true product, or RedLine Diesel WaterWetter (more of a concentrated big-diesel product).

And I agree with Barry, if you have a cooling problem, better to fix it than mask the symptoms as it'll get worse.

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Gone to the dark side

- Jeff

Thats very bad for your engine. Straight coolant has 1/3 the heat carrying capacity of water and 1/2 of a proper 50/50 mix!

Your engine will seize long before it gets to 300*f and I seriously doubt Tennessee will be seeing -40* winters any time soon (The lowest was -32 back in 1917).

Forced this ain't old school anti freeze.Its better and last 10 years.
Evans PGCoolant.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

oldsinner, how do you like it?
forced would not have commented if you just said in the first place you used evans...
well, maybe he would have, but we'll never know now will we?

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

I had planned on using it for years in my SDL when I got it on the road again, but I overran my budget.

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Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)

is the Hy-Per Lubeoil additive equally bad? i just picked some up buy one get one free.

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W123 1985 300TD naturally aspirated

here is the question...

Is it an approved coolany by Mercedes Benz for use in all Mercedes Benz automobile and truck engines?

If the Germans invented,yes.I'm half German,and we are stubborn to accept others ideas.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

incorrect, just because its German doesn't mean it meets the guidelines set forth by Mercedes Benz to be used in its engines for cooling.

I don't care about their guidelines.If I can run a zero psi cap,I'm going with new tech.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran