My slk requires the same.
I am told it is because both our models have plastic headlamp lenses and
the blue stuff can frost / etch the lenses. Maybe we are both being
duped, but it could be expensive to switch to the blue stuff.
After using the concentrate for several years I switched over to using the
plain stuff. I don't see any difference. I always thought that the reason
they recommended the concentrate was because it contained detergents that
prevent windshield streaking that MBs are notorious for.
MB windshields have for years been produced by a vendor who uses a process
that causes the glass to leach out mold oils. This has got on for years. MB
resists any and all calls to change suppliers. The problem is particularly
acute with the single wiper configurations. MB sells little tubes of
additive that are mixed with the washer fluid and help cut the stuff on the
surface of the glass. A friend is an MB service rep, he claims the best
thing to do is add a capful of Dawn dishwashing soap to each fill of washer
fluid. (Naturally, this being a practical but non-technical solution, MB
will not acknowledge it as a "fix".)
Thanks for the advice guys. To me the blue stuff for 99 cents a gallon
makes more sense than blending some concoction. It looks like there is
some heating element down in the reservoir that holds all this. But
the blue stuff isn't flammable so who cares. The blue stuff it is.
The windshield problems with MB are WELL KNOWN !!!!! In fact, some folks even
suggest polishing your windshield with jewlers rouge to remove some of the
endless pits that form. And of course you must never use liquid detergent as
that will remove the paint that it drips down on. The realllllllly amazing
thing is that when you take the kar in to Hanz und Franz for the several
hundred dollar check ups, they can not afford to throw some of that stuff into
the washer bottle!!!! For a while there, my windshield wipers woudl run out of
fluid every time I picked it up after a visit to that little piece of the
fatherland. Yeah it really makes you wonder about what they do with all that
money they take in for routine check ups. Could it go to ... Jerkin Shrimps
mcbrue softglassedly under the bridge in the trailer down by the river
McBrue, you know too much about these cars to be hangin' out in trailer all
day. "Soft glass" is it, my '00 E Class has a million pits on the windshield
after only 31k miles. 5 more months and I can give the thing back to MBNA,
never to return. Actually, the car's been fine, but MB service SUCKS!
I think the point is that the concentrate still has to be added to the blue
stuff in winter in order to keep it from freezing (the blue stuff is
antifreeze). In summer it can be mixed with water as this is not a problem.
In either case the concentrate is designed as a detergent which the bkue
stuff is not.
I think some ppl are talking about ready mixed, cheap as chips blue
screenwash (this is the type of blue stuff I was referring to) and
some ppl are talking about the MB screenwash antifreeze agent, which
is also blue.
Never really had call to use the antifreeze agent, but I still stand
by my original statement, the cheapo blue stuff sucks!
Here are the instructions from the owner's manual for my SLK:
"Use MB Windshield Washer Concentrate 'S' and water for temperatures above
freezing or MB Windshield Washer Concentrate 'S' and commercially available
premixed windshield washer solvent/antifreeze for temperatures below
So it looks as if "that blue stuff," dirt-cheap though it may be, will
satisfy the requirements.
I went to my MB dealer yesterday to buy some windshield washer concentrate
and the service / parts counter guy said they weren't selling it anymore and
that it's been discontinued.
I guess I'm just gonna use the blue stuff (maybe try a bit of Dawn in
Keith & Chris B http://members.rogers.com/kbeddard/birds.htm
Yeah right, Merc have discontinued screenwash....
MBUK keep about 55,000 bottles in stock last time I checked, must be
one of their fastest moving product lines, a bottle is sold with every
service. Can't see them kissing goodbye to that revenue!
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