Its just like a mouse trap but lots bigger!

Tom W

It's 100% coolant, no water
 

To those who asked, it's 100% Mercedes coolant he put in, no water.

jeff

100% pure coolant is the best
 

You better KEEP going to that mechanic...he knows his mercedes.


I have been trying for years to get people to understand that in OUR DIESEL mercedes straight coolant is the best......only by first hand SEEN results i state this.


This man you took it to knows his cars and im sure if you have him do anything else to your car it will speak for its self.

If you dont mind can i have his number just send a PM.

BTW i work on members cars and i use straight coolant i learned this from two master mechanics.....yes i didnt learn enough before they passed away ,but the father 93yrs old when he passed was factory trained and said in germany thats what they taught him....his son was in his 50's when he passed and was certifide from international and john deer ...and learned mercedes from his dad and worked at a shop her in cali....guess what he said.....STRAIGHT COOLANT. To this day the things they taught me that i have verifide have all been true.

ALSO btw when american car makers started on the diesel sedan band wagon....guess what yup they used straight coolant.

FI is correct.

Incorrect. Straight coolant is NOT best. 50/50 is what should always be used. Straight coolant has 60% of the heat capacity, does not conduct heat as well and has a higher viscosity.

More is not better in automotive cooling systems.

Distilled or deionized water should be used for ethylene glycol solutions. City water is often treated with chlorine, which is corrosive.

Incorrect again. What they use is known as "prediluted" coolant. It is already a 50/50 mix so there is no guesswork as to the mixture ratio to use. Lets face it, some factory techs are not as good as others. It is cheaper for the manufacturer to ship around twice the bulk of fluid than to fix mistakes made by techs putting in the wrong ratio of coolant.

From The Good Book itself...
The Factory Service Manual.
http://talk.wwwomen.com/images/smilies/bowdown.gif

Everyone open your Book to chapter 20, section 010, page 1 and read along with me.
Notice MB says to use a ratio less than 50/50 for temperatures down to -22*F. It is only for temperatures down to -40*F that the coolant exceeds the water.

well my temp gauge lies then doesnt it. Though to be fare havent tested the freezing point ,but it sure as hell DOES cool better.

And a good mechanic doesnt ALWAYS go by the book they go by feel and expieriance.......the book doesnt say **** about what always breaks the same on the same models 20yrs down the road now does it. You have to go by feel and by what you SEE work....they dont drill holes in the t-stats ,but that works also if done EXACTLY right.

Havent you seen things phaze out because they were built so well?

just watch over the years as things go from metal to plastic and the cost for goes down.

Now if straight coolant is harder on the water pump i cant say for sure....but my guess is the time frame for failure doesnt matter seeing as there are bad water pumps at 60k and some at 350k just depends on a number of things...install...ect..

Now all im gonna say in defense of the 100% straight coolant is TRY it in the summer and take readings for a week ...then do it with 50/50 then with straight water and i will put $50 bux up to the first person that is local that can show me their car get WORSE temps with straight coolant.


And the american bit i know Cadillac used straight 100% COOLANT NO WATER AT ALL. Find it in writting if you say other wise maybe not all american car makes used the straight stuff.

BTW i hate cadillac im just using them for ref.

Then you haven't seen many good mechanics and I would never trust my car with a mechanic that ignores obvious things like the correct coolant mixture.

No, it means you are not doing something right. Temperature is controlled by the thermostat and cap, not the coolant. If you have to change the system beyond stock to keep it cool then you need to fix your cooling system properly, not patch it with guesswork.

5050 coolant works year round. There is no need to change it with the season.

My engine's temperature stays between 80-85*c every day of the year. Why? Because I followed the book on how to get my cooling system into proper shape, I use proper MB/Zerex coolant at 50/50 ratio, I have a verified working 80*c t-stat, a verified working 140 bottle cap, verified working sender and I don't hack it with shade tree fixes like drilling holes in the thermostat.

I would never abuse my car in such a manner.

Why? Because coolant is only for protecting against corrosion, boiling and freezing.

One of those mechanics that you talked to put 50 50 mix into my car, when I had my radiator changed out last summer....

I didnt say i did that i said some people and i said if done exact.....there are not enough combos on the bottle for every temp in the world....THE BEST mechanics i have seen work in person that have WAY more then 15+ yrs on me do not whip out a book every time they do a job and they also use tricks they have found over the YEARS of WORKING on cars NOT READING. I said the bit about the holes in the t-stat because a totally cleaned system will not read the same as every other one...MILES matter and not everyone has the same miles on their water pump or has JUST done a citrus flush and has new radiator..... fan clutch ...number of fan blades....um same idle ..ect you SHOULD get the point.

A mercedes 617 diesel when having the motor replaced by a used one if possible should also use the doner tranny ...DOES anyone know why? well most wont because it is something you learn hands on OVER time not in the service manual.

And he also said straight is fine ...you have a gas motor not a diesel. Its fine to use 50/50 because it is CHEAPER.

Because most people are too lazy to tune the tranny to match the engines different performance characteristics.

Someone show me on paper HOW straight coolant DOES NOT "COOL" better.

The Zerex specs are as follows:

40% coolant = -12 F freeze point and 260 F boil point
50% coolant = -34 F freeze point and 265 F boil point
70%* coolant = -90 F freeze point and 277 F boil point**

Where are the 100% readings or any findings?

http://www.engineeringtoolbox.com/ethylene-glycol-d_146.html
Specific Heat Capacity of Ethylene Glycol based Water Solutions

Temperature Ethylene Glycol Solution (% by volume)
(oF) (oC) 25 30 40 50 60 65 100
-40 -40 1) 1) 1) 1) 0,68 0.703 1)
0 -17.8 1) 1) 0.83 0.78 0.723 0.7 0.54
40 4.4 0.913 0.89 0.845 0.795 0.748 0.721 0.562
80 26.7 0.921 0.902 0.86 0.815 0.768 0.743 0.59
120 48.9 0.933 0.915 0.875 0.832 0.788 0.765 0.612
160 71.1 0.94 0.925 0.89 0.85 0.81 0.786 0.64
200 93.3 0.953 0.936 0.905 0.865 0.83 0.807 0.66
240 115.6 2) 2) 2) 2) 2) 0.828 0.689
280 137.8 2) 2) 2) 2) 2) 2) 0.71

So, if you are running the engine at -40*F, YES, 100% coolant WILL cool as good as water. But, between 0*f and 280*f you are only getting 54-71% of the heat carrying capacity.

WRONG there is 20 yrs of heating and cooling and leaks have been know to happen more often. Take two cars both dont leak swap trannys and you have about a 60% chance of a new leak.

Yes it is a lazy way on not having any new leaks but it is a good rule IF the tranny is as good or better then the one on your dead motor.

Adjusting a tranny is easy.

i have worked on a number on forum members cars with NO complaints....but guess what....i ONLY TOUCH MERCEDES and guess what else.


I DONT KNOW EVERYTHING OR THINK I KNOW EVERYTHING.

I just go by what i see and feel nothing else .....been let down to much.