Zerex G-05.

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Gone to the dark side

- Jeff

Just a note on G-05. I found some at NAPA. So far that is the only place I have seen it in a while

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My Daily : 96 E-300 Diesel with 195,000 miles
Retired: 92 300D 2.5 T 345K miles and for sale
Retired: 95 E320 157K miles and currently parked with blown engine

Both retired cars are for sale as is my w124 shop inventory

How do you guys dispose of old coolant? I brought my old engine oil to Autozone or O'reilly but they don't accept coolant.

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1996 E320 since 1/16/08, 171K miles as of Feb 2011

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1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE

Just use what the manual tells you to use. Just because something is more advanced does not necessarily mean that it's safe to use in your vehicle, because the more advanced item was engineered to be used in a more advanced vehicle, which are constructed using a far wider selection of materials now; if something was re-engineered, it's likely it was done to address issues that didn't exist previously.

Also, cracked/seperated plastic radiator heads are a common thing in just about every vehicle that uses them these days; granted, that's more an inferior parts issue than anything else.

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A.S.E Tech A1,A6,A7,A8 & MVAC 609 + EPA 608

Unless stated otherwise, any question I ask is about my greymarket 1985 380SEL.

My MB has the green stuff in it and I am going to change it here at home. I am going to get the Zerex coolant.

Do I just need to simply drain the radiator, then refill with the Zerex? Not sure how to flush it myself, unless I just leave the drain out and pour some water through it to get out as much as I can?

Also, I live in an area where it dont get below 5°, even in the harshest cold weather outbreaks... would one gallon be enough, then then refill the rest of the way with distilled water? (BTW, its a W126 with the M103 engine).

Thanks.

I have the flu and you guys are making my head hurt.

Group 1: Please compose sentences carefully and unambiguously.

Group 2: Please read posts carefully and avoid accusations in favor of clarifications.

If I have to write another post like this, you all will have to change your antifreeze, or else!

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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

You'll have a drain plug on the block, If I remember correctly, under the exhaust header. Another drain plug on the bottom of the radiator, on the right side underneath.

I'm not sure on the capacity of the cooling system on the M103, but asuming the total capacity is around 9-10 litres, a gallon should be fine.

Cooling capacity on M103 in a W126 is exactly 3 gallons. Dunno about other cars.


They will if you dump it in their oil recycling tank! Just pretend you've got oil in there, and walk to the back and dump it in!

I have often debated if my doing this was wrong, but I have decided that they have to separate that crap anyway, and obviously they have to do it in a manner that allows for water and other liquids being safely removed from the oil. I'm sure its a pain for them to do, but hey...... They sell anti-freeze and don't take back the waste? WTF is that BS?

So yeah, I just dump it in with the oil. I sometimes mix it in with my used oil. The one time they said anything, I said "cracked head gasket" and they just said "oh".

Seriously, what do they expect us to do, drink it?

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-tp


1990 300SE "Corinne"- 145k daily driver - street modified differential - PARTING OUT OR SELLING SOON - PORTLAND OR. AREA - PM ME FOR DETAILS
1988 560SEL "Gunther"- 190K passes anything except a gas station
1997 S420 - 265k just bought it with a rebuilt trans. Lovely condition

1. MB coolant was tested in the MB engines, the others were not.
2. Yes, there are different alloys used in MB engines than used in those of other cars.
3. Increased corrosion will lead to earlier leaks, like at the water pump shaft. MB water pumps cost several hundred dollars. I would rather leave the old stuff in there than try to save $4.95 with a bottle of Pep Boys' finest.

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Prost!

What are these different alloys, and how does the coolant affect them?

I don't work in the Daimler test lab so I won't venture a guess. I can look up the mailing address from the engine plant for you if you'd really like ot know.

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Prost!

So how do you know the alloys are different? I happen to be quite familiar with all the materials used in the automotive industry. I also keep up with emerging technologies used in automotive materials. Pretty much all manufacturers use similar alloys in the cooling systems. There are few surprises when it comes to alloys that contact the cooling system. Coolant technology is not that exact a science.

is it OK to use Dexron III in my 722.329?

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1996 E320 since 1/16/08, 171K miles as of Feb 2011

---------------------------------------------------------
1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE

Obviously I don't know their trade secrets. I can say, however, that for the M-Class there were dozens of engineers like you who thought that any US company could provide a Mercedes part as well as their German counterparts. The reality, however, was that the specified alloys (for aluminum parts) were not common in the US, and indeed the parts needed to be sourced overseas.
Why is that important, though? What would be convincing is if you could show an endurance test of different coolants in a running MB engine. I have a sample size of two where the water pumps started leaking after using "insert name here" coolant. Was it the ultimate cause - no idea, but I do believe in science and chemistry and corrosion, so I'm convinced (given the cost/benefit).

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Prost!

Iron motor block; aluminum heads, aluminum cooling (heater core and radiator) system.

I love the fact that there's some pushback to using MB or Zerex G-05 (both made by Dow Chem in the US and packaged in the same jug) given that fact that 1) it's a Mercedes spec; 2) the coolant has a 2YR life; 3) It isn't that costly.