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Changing windshield washer fluid

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Old Yesterday | 01:14 PM
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2010 E350 Luxury Sedan, Engine 272 (V6)
Changing windshield washer fluid

Went to check my washer fluid today and noticed that it is brown. Think I have seen it this color before a while back. Perhaps brown is color MB dealer uses?
Does the fluid need to be changed? If so, can I just use a shop vac to suck out some of the brown (old) fluid and add new fluid?
Thanks
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Old Yesterday | 02:44 PM
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I'd be curious what is swirling around in the bottom of your fluid tank- a vacuum with a clear 3/8" hose taped to it should get down there and let you see.
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Old Yesterday | 07:17 PM
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I'd use a turkey baster -- slower than a shop vac, but less cleanup.
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Old Yesterday | 07:28 PM
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I use purple color washer fluid.

They sell orange washer fluid. Is it orange?

Get a sample in a glass and look.

Stick a garden hose in and flush it out. Use a decent stream so it hopefully agitates any sediment and it flows up out the top.

MB recommends using tap water when mixing the washer fluid concentrate.











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Old Today | 04:39 PM
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I use the blue washer fluid that is sold by local auto parts store. Never had a problem with any of my vehicles.
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Old Today | 04:44 PM
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Thanks

Thanks to all who replied. May try the turkey baster first. Have used the blue fluid from local auto parts place for many years.
Do not use M-B dealership as too far away; very long wait times for even routine maintenance; very expensive. So use local indy that specializes in European and other foreign cars.
Nissan dealership has someone check levels and fill as necessary while attendant "writes "up the service order.
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