To add one small nugget to Marshalls excellent instructions, turn the heater
control to full hot - and leave it there until finished with the whole
process including refilling with the appropriate coolant mixture. Failing
to do so can allow a bubble to form that will not be flushed out and irratic
temps will occur.
Good luck with your Citric flush - I plan to try it myself during the next
year or so.
Larry T (67 MGB, 74 911, 78 240D, 91 300D)
www.youroil.net for Oil Analysis and Weber Parts
Test Results http://members.rennlist.com/oil
Weber Carb Info http://members.rennlist.com/webercarbs
Porsche Road Test http://members.rennlist.com/roadtest/
.
----- Original Message -----
From: "Marshall Booth" <[EMAIL PROTECTED]>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Sent: Wednesday, July 05, 2006 4:07 PM
Subject: Re: [MBZ] Citric acid flush questions
Steve MacSween wrote:
1. IIRC, the flush mixture stays in for 20 minutes. Yes?
2. Is it acceptable to use the lower rad hose as a drain? (Not being
lazy,
just my back is sore as the devil and I don't want to jack the car up and
put a jackstand under it, to use the drain.)
TKS
Needs to be warmed up and then allowed to cool down. Allow to warm to 80
deg. C (normal operating temperature) and allow to remain there for 10+
minutes. Allow to cool to 50 deg. C (that usually takes 10-20 minutes)
and drain.
You can drain it any way you wish, but virtually all the fluid must come
out (from the radiator AND the block drains). Engine MUST be flushed at
least 3 times (each time the engine must be brought to operating temp
and run for 5 minutes at that temp to insure the acid is all out).
Marshall
Marshall
--
Marshall Booth (who doesn't respond to unsigned questions)
"der Dieseling Doktor" [EMAIL PROTECTED]
'87 300TD 182Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi, '84
190D 2.2 229Kmi (retired)
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