Is there any way of doing a "back flush" on a 617?

I know all about the citric acid flush, but wanted to know
if I could back flush the system first to get the majority
of the crap out.

I did a search and came up empty on back flushing.

Which hose would I cut into for the tee?
I would imagine the one going into the head, but there
doesn't seem to be enough room in the hose.

__________________
81 Mercedes 300SD 289k.......SOLD
82 Mercedes 300CD 252k......slow ride

82 mercedes 300 SD...mi Unknown
83 Mercedes 300D ????ksniff..gone too
84 Mercedes 300D 148k........SOLD
85 Mercedes 300TD 386k and holding some one elses project

I takes about 10 minutes to remove the radiator from the car. Take it out, turn in upside down and flush away.

Removing the radiator also provides a great opportunity to clean/straighten the fins.

That will only flush the radiator though, not the whole
system

__________________
81 Mercedes 300SD 289k.......SOLD
82 Mercedes 300CD 252k......slow ride

82 mercedes 300 SD...mi Unknown
83 Mercedes 300D ????ksniff..gone too
84 Mercedes 300D 148k........SOLD
85 Mercedes 300TD 386k and holding some one elses project

Apparently, I misunderstood the title of the thread.

i would not install a plastic t in my hose. i've seen those things leak on several cars. if you run a cleaner in the system and flush it good, it will be fine. no need for a t. if you feel you need more, fill it with water drive it for a few days and flush it again.

__________________
1984 300TD "MAX" 303K+ still going...
fast '70 Chevelle 200k+
home built Shovelhead chopper

I connected series of 1/4 inch pipes to the block drain, then connected a piece of garden hose to the nipple.
I connected the hose to the piece of hose and flushed away...

I used a 2 inch nipple, a 90 degree elbow, a 4 inch nipple, a 1/4 inch ball valve and another piece of pipe, which I connected the hose to with a hose clamp to make it secure.

You can run the water into the system, then close the valve to let it circulate for a while before removing the garden hose and letting it drain.

__________________
"I have no convictions ... I blow with the wind, and the prevailing wind happens to be from Vichy"

Current
Monika '74 450 SL
BrownHilda '79 280SL
FoxyCleopatra '99 Chevy Suburban
Scarlett 2014 Jeep Cherokee
Krystal 2004 Volvo S60
Gone
'74 Jeep CJ5
'97 Jeep ZJ Laredo
Rudolf ‘86 300SDL
Bruno '81 300SD
Fritzi '84 BMW
'92 Subaru
'96 Impala SS
'71 Buick GS conv
'67 GTO conv
'63 Corvair conv
'57 Nomad

ROTFLMAO !

I was going to comment regarding the thread title, but that is even better.


If you wish to perform a "Cooling System Flush" and do not want to isntall the "prestone flush tee", simply disconnect a hose, install a barb adapted to a female garden hose fitting. Connect the garden hose and administer water as needed. A section of hose with the appropriate ID can attach to the fitting that now has no hose attached. This length of hose could be directed to a bucket or barrel to capture coolant/contaminants that perhaps (hopefully) you dont wish to wash out to the ground.


for the summer months I do recommend running the system with straight water for a period of time (day, week, what ever), flush again, then refill with fresh coolant and test specific gravity.

While on the subject of "flushing," dont forget your brake system. This should be flushed every one to two years.

__________________
83 300TD (need rear wiper assembly dead or alive)
84 300SD Daily driver
85 300TD almost 400k miles and driven daily.
98 E300D *sold
86 300SDL *sold and made flawless 10 hour journey to new home.