Well, guys, I have read the thread with great interest as my cars seem to be running hotter this year and I have done the usual things like others have reported on the site. I have even flushed the cooling system with the MB citric acid solution, all to no avail.

When I read the report on this Evans product, I was hoping I would see where it reports it lowers engine coolant temperatures. I did not see it and while I understand how it prevents boil overs and all the ills associated with water based coolants, I do not believe it even makes a claim to lower engine coolant temps as none of the material's characteristics would suggest it should lower coolant temperatures.

I also did not see anything about how it fares in comparson to the water based coolants with regard to its thermal capacity and heat transfer characteristics. I did see some stuff that seemed to ignore the benefits of nucleate boiling, a very efficient and effective heat transfer mechanism of water based coolants and categorize all phase changes in the coolant as a form of cavitation, which we would all agree is not good.

Anyway, I am still looking to make my cars run at their normal operating temperatures in warm weather, especially under load or in stop and go traffic. Used to be my 240D seemed to have an invisible peg at 87 or so degrees C.

Jim

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Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)