1. 2 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     WR = 2st Enduro & CR = 2st Cross

125-200cc How to clean old crusty coolant out of radiators?

Discussion in '2 Stroke' started by dea9, May 21, 2019.

  1. dea9 Husqvarna
    AA Class

    Location:
    Manhattan
    Husqvarna Motorcycle:
    2011 WR150, 2004 CR125, 2006 TE450
    Other Motorcycles:
    KTM EXC200
    Hi everyone,

    I have crusty sludge in my rads from old coolant that was in there and seems to have dried out. I think it was some kind of high quality racing coolant, and it was red. It doesn't seem to easily flush with just water. What should I use to dissolve and flush this out completely?

    Thanks,
    Dan
    dea9, May 21, 2019
    #1

  2. shawbagga Husqvarna
    Pro Class

    Location:
    Eaton, Western Australia
    Husqvarna Motorcycle:
    None
    Other Motorcycles:
    2018 Gasgas XC250
    50/50 distilled water & distilled white vinegar. Run it for 10 minutes then flush. Repeat if necessary.
    shawbagga, May 21, 2019
    #2

  3. flyingbob Administrator

    Location:
    USA
    Husqvarna Motorcycle:
    01&02WR360_02WR250_02CR250_12WB165
    Other Motorcycles:
    01 VOR400_07 TM450_22 GG250_07 Tuono
    What he said.
    flyingbob, Aug 9, 2019
    #3