Results 1 to 8 of 8

Thread: Most Up-to-date Coolant Recommendation

  1. #1
    Member
    Join Date
    Apr 2023
    Location
    Canada (Ontario)
    Country
    Canada
    Posts
    88
    Thanks
    16
    Thanked 5 Times in 5 Posts

    Question Most Up-to-date Coolant Recommendation

    Hi Guys,

    So I realized my 2015 Mirage SE (Manual) is one of those mirage with half heat (clogged up heater core) problem, heating only the driver side. Also, I just passed 200,000 KM so I have the following questions:

    1. If the heater core is clogged up, won't the coolant back-flow and not circulate throughout the system? Does mirage give any warning light about engine overheating?
    2. Anyone had any success with unclogging the heater core using specialized detergents without replacing the heater core itself?
    3. What is the most up to date Engine Coolant Recommendation for the mirage on the forum? And is there any point changing the coolant with a clogged up heater core?


    Last edited by littlemoule; 07-10-2024 at 03:22 AM.

  2. #2
    Senior Member
    Join Date
    Feb 2021
    Location
    Toronto
    Country
    Canada
    Posts
    1,056
    Thanks
    1,600
    Thanked 254 Times in 208 Posts
    1. will not back flow. Coolant just flows through only half the heater core. I believe there is also a parallel path for coolant to flow within the engine compartment. Not all coolant goes through the heater core.

    2. There are people on the forum that have experimented with this. You can probably search the forum and read about it. Here is a reputable one: https://mirageforum.com/forum/showth...nt-Flush/page6

    Additionally there is a replacement heater core that can be installed with less effort than the OEM one: https://mirageforum.com/forum/showth...acement-easier

    3. Like oil this is very subjective. I only use OEM coolant. Changing coolant is good preventative maintenance but will not help/fix your heater core issue. Its simply too late for that to work.
    please consider checking out my Mirage related youtube channel: https://www.youtube.com/channel/UC6c...IEViRFw/videos

  3. The Following User Says Thank You to mohammad For This Useful Post:

    Eggman (07-10-2024)

  4. #3
    1. Yes there is a red warning light that comes on if you overheat the engine. It's a red thermometer symbol, like the green one that comes on when the engine is cold. And like mohammed said, a plugged heater core won't overheat your engine.
    2. I've had half assed luck using drain cleaner in copper heater cores on older vehicles. But they only worked slightly better, not nearly as good as a new one.
    3. On the work cars I use what I've used for the last almost 10 years. Just aftermarket premixed blue import coolant that met the mitsu specs. In my own car, it had prestone or some green coolant in it when I bought it. When I replaced the engine I dumped green stuff back into it. Heater works fine in the winter, old engine had zero corrosion in the water jackets but neither did any of the ones I tore down with the blue coolant.

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)


  5. The Following User Says Thank You to Fummins For This Useful Post:

    mohammad (07-11-2024)

  6. #4
    Senior Member Top_Fuel's Avatar
    Join Date
    Feb 2016
    Location
    Ohio
    Country
    United States
    Posts
    3,737
    Thanks
    2,659
    Thanked 2,562 Times in 1,487 Posts
    Quote Originally Posted by littlemoule View Post
    Anyone had any success with unclogging the heater core...without replacing the heater core itself?
    Start reading at THIS post. This guy set up a bucket and used a pump to circulate mineral spirits through the heater core (for several hours). He reported a significant improvement in heat output after doing this.

    If my heat ever gets that weak, I'll absolutely try this before I even consider replacing the heater core.

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage ES 1.2 manual: 52.2 mpg (US) ... 22.2 km/L ... 4.5 L/100 km ... 62.6 mpg (Imp)


  7. #5
    Member
    Join Date
    Apr 2023
    Location
    Canada (Ontario)
    Country
    Canada
    Posts
    88
    Thanks
    16
    Thanked 5 Times in 5 Posts
    Thanks for all the good reply friends.
    Okay so as long as it doesn't overheat due to any possibility of backflow I won't worry about it. I did notice that in the THIS post, the OP had some overheating issue because of his clogged up heater core.
    I will get the coolant replaced as a preventive maintenance anyway. As for the heater core itself, I won't bother with it - it looks like a big hassle. I might just get some 12v shop to install an electric heater down the road if I really need it.

  8. #6
    Senior Member
    Join Date
    Feb 2021
    Location
    Toronto
    Country
    Canada
    Posts
    1,056
    Thanks
    1,600
    Thanked 254 Times in 208 Posts
    Quote Originally Posted by littlemoule View Post
    Thanks for all the good reply friends.
    Okay so as long as it doesn't overheat due to any possibility of backflow I won't worry about it. I did notice that in the THIS post, the OP had some overheating issue because of his clogged up heater core.
    I will get the coolant replaced as a preventive maintenance anyway. As for the heater core itself, I won't bother with it - it looks like a big hassle. I might just get some 12v shop to install an electric heater down the road if I really need it.
    The Mirage has a built in electric heater. Fummins made a video on it: https://www.youtube.com/watch?v=JkzmRd2FDso you could probably jump the relay or add a switch to it to force it to stay on.
    please consider checking out my Mirage related youtube channel: https://www.youtube.com/channel/UC6c...IEViRFw/videos

  9. #7
    Member
    Join Date
    Apr 2023
    Location
    Canada (Ontario)
    Country
    Canada
    Posts
    88
    Thanks
    16
    Thanked 5 Times in 5 Posts
    I had no idea electric heating element existed in all mirage. If such is the case, in peak winter times wouldnít it blow warm at least to begin with? Last winter I didnít find that to be the case. Also, in the video, there is no mention of where is this located in the mirage. Good idea of seeing into jumping this element if it exists, but Iím not sure if it exists.

  10. #8
    Senior Member
    Join Date
    Feb 2021
    Location
    Toronto
    Country
    Canada
    Posts
    1,056
    Thanks
    1,600
    Thanked 254 Times in 208 Posts
    Littlemoule - It is next to/pressed against the heater core. It is part#8 in this diagram. It has a separate relay/fuse box you can check to ensure it's present on your car, it is located near the battery. Some users remove the fuses for the electric heater to improve fuel economy. (A photo of this is shown in the thread below)

    I agree that I do not notice warm air when the engine is cold. I imagine some of the heat is likely soaked up by the heater core.

    Here is a thread that talks about this: https://mirageforum.com/forum/showth...ment-in-Heater


    please consider checking out my Mirage related youtube channel: https://www.youtube.com/channel/UC6c...IEViRFw/videos

  11. The Following 2 Users Say Thank You to mohammad For This Useful Post:

    BigMW (Today),Eggman (Today)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •