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Coolant & Antifreeze Explained

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by oilman, Mar 1, 2011.

  1. OP
    oilman

    oilman Forum Supporter Authorised Forum Supporter

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  2. azimabdul1983

    azimabdul1983 Member

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    Hi,

    I've got a 2010 E Class (E200 CDi Sport), I believe it is the W212 model as per my profile picture. I got a message on my way into work this morning to say "coolant level is low...". I am also now due my next service which is going to be a service B (at 56k miles). I am planning to wait a couple of weeks before getting my service done, should I just add a little bit of water as per some of the suggestions and see if the message comes up again? Or better to get some coolant and top up before I get my service done?

    Any advice would be gratefully received. Also, as I am at work now I have not been able to check the manual to see what coolant is suitable for my car. I have gone to "https://www.opieoils.co.uk/" and put in my registration but was not able to see a suitable coolant for my car, can anyone point me in the right direction?
     
  3. John Laidlaw

    John Laidlaw Senior Member

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    You can get a couple of litre bottle of ready mixed coolant at Halfords for about £12. I’d top up with that until your service, as you say only a couple of weeks away. Don’t let it go low certainly and straight water at this time of year isn’t a great idea either.
     
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  4. azimabdul1983

    azimabdul1983 Member

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    @John - Thanks for the tip, on my lunch break I went down to a local auto shop and asked for them to look up which coolant I should use as top up. They gave me a green solution, stupidly I purchased the coolant before opening the hood and checking. I did check after buying the coolant and it looks like the coolant level is actually okay. I drove to the auto shop which is about 3 to 4 mins drive from the office and the message did not come up. I did take a photo of the coolant level just to make sure I am seeing correctly, attached is a photo and from what I can see my coolant level seems okay?

    Also, the coolant in the car looks like an orange colour and the one I purchased is green. I did read somewhere that we are not supposed to mix? I can't remember if that was to not mix the colours or if it was related to a specific "type" or "property" in the coolant which should not be mixed? I also forgot to take a pic of the coolant that was sold but hopefully I can refund that if my coolant level seems normal and it may just have been a sensory glitch?

    I could not reply specifically to your message as each time I hit the reply button I get some form a java script error and don't have enough time on my hands to work out what the problem is with browser.

    Thanks
     

    Attached Files:

  5. John Laidlaw

    John Laidlaw Senior Member

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    Oh dear! The coolant level looks to be ‘just about’ OK. Have you unscrewed the cap and looked inside? (When the engine is cold of course!)There should be a level marker I think in yours which is visible inside to tell you where it should be sitting. had I realised it was that close I would have suggested just a very small water top up as you originally said!My apologies. The yellow stuff you have in will be the MB G05 spec, an OAT type (Organic acid inhibitor)- what you will have read is not to mix that with an IAT (inorganic), as for the rest the colours are the colours.
    Remember of course the car will have been cold on your short journey.
    [​IMG]
     
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  6. azimabdul1983

    azimabdul1983 Member

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    No need for an apology, I should have done the sensible thing and checked the level before going to the shop. I can pop down and get a refund tomorrow so that is not a problem at all. I will see if the message pops up again on the drive home from work but will add a little bit of water tomorrow morning when it will be nice and cold before I set off for work. I did open up the cap and take a look inside, I can't think of the correct terms/words to use to describe what I saw... I think I saw the level marker but didn't see it if that makes sense (saw it but didn't register in my head at the time). It looked like there was another tube like thing sticking up inside the bottle and I could not see any coolant in that compartment/tube (not sure if I have described that correctly). I am guessing the coolant should not exceed that level which is why it looked like there was no coolant in the little tube/compartment. - hopefully that all makes sense. I will add a small amount of water and see if the message comes up again over the coming few days, I do plan on getting the coolant replaced as part of the service in a few weeks time so I can live with the message for a short period if it does come up. Thank you for your help, much appreciated.
     
  7. OP
    oilman

    oilman Forum Supporter Authorised Forum Supporter

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    Hi

    Sorry, for some reason I've only just got the notification from the forum.

    You need to be a little careful with the coolant, it should be a MB325.0 spec, which doesn't have certain additives as they can affect seals and cause wear. If you are dropping the coolant in a couple of weeks, no worries.

    Often it's best to top up with water as diluting coolant is usually okay - normally they are fine down to about -30C or so and hopefully we will not get anywhere near that. With water, there is no need to worry about compatibility or additives.

    Cheers

    Tim
     
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  8. azimabdul1983

    azimabdul1983 Member

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    Thanks for the info, will make sure I get the correct coolant for when the car is serviced and coolant is replaced. I did forget to top up with water this morning, I was in a bit of a rush to get into the office and ended up forgetting. However; the coolant level low message has not popped up either since the first time I got it yesterday just before the drive into work. The level seems okay to me so I will put the message down to a one off glitch. I did have a look around the coolant tank and cannot see any leaks or anything so hopefully the message won't pop up again. Service is a few weeks away so I won't worry unless the message starts repeatedly popping up.
     
  9. Ricardo230

    Ricardo230 New Member

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    Hi I have a w124 230e and the temp guage doesn't work. Yesterday while I was waiting for my wife it started steaming and dumped a load of coolent on the street. I topped it up from a boiled kettle when it had cooled down a bit.
    Is this serious ?
     
  10. Jim2

    Jim2 Senior Member

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    Your Mercedes:
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    For my 2010 Mercedes w212 E Class 2.1 diesel, can you tell me what is the coolant capacity Please?
    Also Mercedes Benz Antifreeze A 000 989 08 25 10, is this an "IAT" or an "OAT" antifreeze?
    Likewise is Comma Xtream G48 an "IAT" or an "OAT" Antifreeze?
    Thanks, Jim.
     
    Last edited: Sep 26, 2018

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