I'm curious, how much vinegar to you use? Diluted or straight vinegar? Acetic acid should work very well to remove the rust if its left to sit for a period of time.

I wish someone would clue my in as to what this Distilled water conversation is ABOUT...

Once you mix the water with 50 percent antifreeze... what does anyone think will be the difference ?

and I still say.... like Vstech mentioned about the physically active bubbles used by some shop ... or the rooter method I mentioned to stir up the sediment which has built up in the lower coolant cavity....that something MORE than a passive acid application to get it loosened enough to then ' float it ' or ' flush it ' out of that closed deep cavity will be needed.....

__________________
1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/diesel-discussion/10414-help-i-need-check-stretch.html

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html

Distilled water give a known solution... Tap water mixed with the coolant has additives that leave sediment in the motor.


Tap has lime, chlorine, floride, and plenty of metals, and other organics...

Distilled has... Water.

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Well, I am sticking to my opinion that some kind of PHYSICAL aggravation is what is needed.... and whatever so called ' sediments' which might BE THERE... will be offset by the chemicals in the antifreeze.......

Has anyone seen any indication that MB thought tap water might be a problem ?

__________________
1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/showthread.php?threadid=10414

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html

But what ever that is not water in tap water is minute and is measured in parts per million. In 2 gallons of tap water, you'll need a microscope to see whatever amount that's settled out. Don't worry- be happy.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked