Here is how i clean my radiators on my quads. i did one off the LTR so you can see how it works better. but this method works on the quad just as well. i used nu-calgon brand NU-BRITE coil and condenser cleaner. i also do this on my cars and trucks to keep the a/c and radiator working 100%
PRODUCT LINK BELOW!
available on amazon
Nu Calgon 4291-18 Nu Brite Aerosol
NU Calgon Nu Brite 1 GALLON
Frost King coil cleaner LOW VOC
**HERES LINK TO VIDEO OF DOING IT INSIDE THE VEHICLE!**
will work on car, truck, intercoolers, any type of radiator, RZR, bus, semi truck Rzr 1000 xp turbo S pro can am maverick xr XMR mud dirt dust sand oil grime