Brown coolant
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Joined: Mar 2021
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2014 e550 sedan
Brown coolant
My coolant turned brown. It was blue. It’s not a moly like mixture as of if oil was in it. I’m not sure any help is welcome. 2014 e550
previous owner had orangish coolant in it then i replaced it with blue. Hopefully that’s why it’s that color as of now because it mixed
previous owner had orangish coolant in it then i replaced it with blue. Hopefully that’s why it’s that color as of now because it mixed
Last edited by Devon West; Mar 20, 2021 at 01:24 AM.
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
you are right on the cusp year when Mercedes switched from their old 325.0 blue coolant to the new 325.5 violet-pink stuff. THEY ARE NOT MIXABLE, and other random generic coolants that don't meet the correct spec for your engine can have bad effects like gumming everything up. I would do a thorough cooling system flush and refill it with the correct spec.
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'11 E350, '11 E550, '98 M3, '95 E320
I don't know of an approved orange coolant for MB.... I would start my thoroughly flushing the coolant, draining both the block and radiator. Then clean the system with approved detergent and re-flush. Finally fill with approved G48 or G05 coolant (either blue or yellowish-clear).
Assuming you're sure its not oil from a failing HG or cooler...
Assuming you're sure its not oil from a failing HG or cooler...
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
trans fluid is more challenging. you have to jack the car up so its dead level, and open up the drain plug and catch what dribbles out. to change or add ATF, you need a pump setup to pump it up into the transmission through the drain plug.
this video goes through the whole change and refill process
this one shows how you check the level, and in the process get some drips out you can catch in a clean container to inspect
this video goes through the whole change and refill process
this one shows how you check the level, and in the process get some drips out you can catch in a clean container to inspect
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Joined: Apr 2019
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
OEM coolant life span ??
Practically how long do you keep your OEM coolant before replacing it with equivalent specs?
Is the extended flush interval what eats into the dissimilar metal of the transmission heat-exchanger ??
🤔
Is the extended flush interval what eats into the dissimilar metal of the transmission heat-exchanger ??
🤔
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
both the MY10 and MY16 booklets say for regular E class (non-AMG), every 150,000 miles or 15 years for coolant change. They of course say to check it every 10K as part of the "A" service, and if the level is low to investigate why and repair as needed.
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From: Tripolo-Libanon
W212 2011
You need to check your oil level to be sure that there's no coolant in it. And open your oil filling cap and be sure there's nothing on the cap "like some milky".
So no coolant in oil + the car isn't over heating then your head gasket is fine
Oil in coolant reservoir. If there's no symptom of bad head gasket your oil cooler should be replaced
And you should flush the system like 10 times 😢
So no coolant in oil + the car isn't over heating then your head gasket is fine
Oil in coolant reservoir. If there's no symptom of bad head gasket your oil cooler should be replaced
And you should flush the system like 10 times 😢
