Advice on flushing the radiator - BMW F800 Riders Forum & Registry



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  1. #1
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    Hi guys,
    I'm new to the forum so I don't know if this is the right place to post, but I'm a very happy owner of a F800ST so I'll try here.

    A couple of days ago I was talking with a friend of mine when he suggested that I flush my radiator, as you're supposed to do it every couple of years or so, and I have my BMW since 2017.
    Now, I'd prefer to do it myself (to learn how it's done and to save a couple of bucks in the process )... so I searched on the web and found actual reviews on radiator flushes and cleaning solutions. Didn't know they were a thing... I assumed water was enough but apparently not.

    So, my question is do you have any experience with these cleaning solutions? Do they work? And would you recommend DIY over going to a mechanic for a flush?

    Thank you!

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  3. #2
    Points: 11,828, Level: 75

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    I think you should rely more on BMW service recommendations and less on advice from your friend.

    Sent from my SM-T813 using Tapatalk

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  5. #3
    Runmyownlife's Avatar
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    Drain. Refill. Done.

    You can flush further with water or commercial products. Either way will be inconsequential IMO.

    There is a good article in the Hall of Wisdom:
    Coolant flush and replacement
    Concrete remains undefeated. 

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  7. #4
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    Wasn't the point of that post in the Hall of Wisdom that the OP was flushing for a trackday where you can't use coolant in your system? Flushing your coolant is not part of the regular maintenance schedule, the stuff is good for well over 100k miles. If you have some reason to think it's a problem you could always get a coolant test kit and check.

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  9. #5
    Daboo's Avatar
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    I found the same thing that rcb78 is saying about flushing the radiator. I found an excellent independent BMW mechanic and had him check my valves. I was going to have him change the coolant while he had the bike apart and he talked me out of it. Said it was unnecessary and not part of the maintenance schedule anymore. I figured I'd trust him on that. After all...he talked me out of spending my money when he didn't have to.

    Chris
    Elnathan - 2014 BMW F800GT
    IBA# 49894 True Rounder = 0-20's - Rounder -- to -- 100's+ Red Hot Rounder

    John 14:6 

  10. #6
    Ware, Herts, UK Pat H is offline F800Riders.org Supporter
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    14 years and 127k miles on my F800 and never flushed the Rad.
    It's just not an issue. Leave as is.
    Flame red F800s as of Nov 2006. Watch for me around North London.


    Don't miss the F800 Garage Door Opener Video: http://www.youtube.com/watch?v=1C-Bxifv2Pk 

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