Brian is right about this.

If you've got the system drained, its less than 20 minutes to pull the radiator.

I use Sierra brand polypropelene glycol type antifreeze. This is plasic based and is evironmentally friendly.

new radiators on 20 year old cars is best option My auxilury fan runs all the time till september then i wire back properly but i have no a/c

pssst dont tell anyone but i have green coolant but car will prolly die any day now

__________________
commercial fisherman diesel in my blood in my boats trucks and Dear old Dad has had me drivin them since i got my first license in 1968
1986 300 SDL 427654
1999 Chevy Crew Cab Dually 225423
1986 300 SDL 287000 Dad's
1987 190 Turbo 158000 Mom's (my inheritance)

Citric acid flush is not supposed to be done until after a deoil of the system is done. De-oiling is required whether or not there are any signs of oil in the cooling system. Otherwise the citric acid flush will not be nearly as effective. De-oiling is as simple as dumping in some Liquid Tide (some use dishwasher soap or you can buy the Mercedes product), heating it up to circulate it and then doing a good flush.

__________________
Len
'59 220S Cabriolet-SOLD and living happily in Malta
'83 240D 351,500 miles original owner-SOLD
'88 560SL 41,000 miles - totaled and parted out
https://sites.google.com/site/mercedesstuff/home
'99 E300 turbo 227,500 miles
'03 SLK320 40,000 miles - gave to my daughter
'14 Smart electric coupe 28,500 miles
'14 Smart electric cabriolet 28,500 miles
'15 Smart electric coupe 28,000 miles

Order it online, this site sells it. Order over $100 worth of stuff and the shipping is free. Thats not hard $100 is pocket change when your fixing one of these.

__________________
1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

next time I am due for coolant in this one, I am tempted to go to evans waterless coolant. diesels are more effecient at higher temps, and evans will not boil to 300*F-ish. of course, a new custom thermostat will be needed.

of course, this is a all cast engine.

__________________
1984 123.193 372,xxx miles, room for Seven.

1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.

PEH uses it and swears by the stuff.

But, 100% coolant has about 75% of the thermal capability of pure water.........so, you can bet that it's going to run hotter........even without a change in thermostat. The cooling system won't keep up the the load on a hot day running high power levels (uphill).

ok, so they may run hotter, but- what is the upper safe temp levels on our engines, when the boiling piont of water is not a factor? from what I have read, the diesel truck guys using evans havent had issues getting into the 230*F range.

sorry- this will be my last post about this on this thread- we could start a new one...or revive an old one...

__________________
1984 123.193 372,xxx miles, room for Seven.

1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.

That's the proverbial question of the day. The engine wasn't designed to run continuously at 230F. What it will do with such a temperature is unknown.

Remember, it's got a lot of very close tolerances when compared to the typical gasser.