http://bevo.mercedes-benz.com/bevolisten/325.0_en.html

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Marshall Welch
Seattle, WA
1982 300D-T

Last time in Autozone, my head spun from all the new coolants - red, pink, blue, green. Many are specific to different Jap cars, and so expensive they come in cute quart jugs.

Both my 300D's have Evans Waterless Coolant, one for several years now. Both hit ~105 C climbing the steep I-5 grade south into the LA Basin on a 100 F summer day (where manufacturer's validate new models), but might have seen the same w/ regular 50/50.

My 1985 has been over-heating this winter (~100 C), but I think something else, due to the symptoms. I swapped the T-stat, and will next pull the water pump now that my backup minivan is repaired. I won't be surprised to find the impellor loose on the shaft or corroded. If it turns out the head is cracked, that might raise concerns re Evans coolant, though the engine has unknown mileage and history.

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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans

THANX Marshal ! .

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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

It's true the attention to detail is important. I have plenty experience with OAT coolant. You can have plenty of success with it.

But I do believe having the correct manufacturer prescribed coolant is important. This will prevent having a future mishap of cross contamination and issues like I posted almost 5 years ago. For your w123 folks, stick with the G05 coolant.

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1983 123.133 California
- GreaseCar Veg System

My 240D came with green stuff, so I fully flushed, and put in some blue BMW coolant I had on hand. No problems to report after a year. Don

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John 5:25

Your experience is based on flawed work. Cross contamination confirms that. Accept the fact that the failures of Dexcool is based on your lack of attention to detail not the product. People make mistakes all the time. Don't minimize my success with your lack of..........

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DDC/MTU....Setting the pace
1985 300cd
1983 300d...aka "The Yummymummymobile"....Wifes ride
2006 Wesmac 38' Sportfisherman, Single DDC/MTU 12V-2000 1500 hp

I've used a combination of goat urine and crankcase drainings for years now with no issues.😉

I do not trust any of GM's recommendations because they are all controlled by the Finance weenies.

Example: The chart given to GM dealers regarding ATF currently says that GM-recommended ATF for post 2013 cars will last 150,000 miles before change.

Translation according to GM techs I know: 90-100% of the capability of the fluid as a hydraulic/ lubricant/coolant will be gone at 150K miles, so you have to change it. No comments on filter, so I guess you leave it in place, huh?

Would YOU wait that long? I wouldn't.
When I asked the techs about their personal cars, the mileage before change varied from 25,000-35,000 miles.

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Strelnik
Invest in America: Buy a Congressman!

1950 170SD
1951 Citroen 11BN
1953 Citroen 11BNF limo
1953 220a project
1959 180D
1960 190D
1960 Borgward Isabella TS 2dr
1983 240D daily driver
1983 380SL
1990 350SDL daily driver alt
3 x Citroen DS21M, down from 5
3 x Citroen 2CV, down from 6

Wait a second...

If you read my reply to your comment more carefully, I was agreeing with you that OAT coolant can be run successfully when attention to the details is made. I then said I have plenty of successes with it.
I then proceeded to note the failures are typically from cross contamination - which I have never mistakenly done but seen the results of others. So my recommendation is to use the correct coolant for the vehicle type to prevent this from happening.

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1983 123.133 California
- GreaseCar Veg System