I thought I called myself cleaning mine as well, but I took my oil cooler off one day to do some repairs. The back was so packed up with dried mud. I know its hard to see the back of it, so never assume.
When you clean your radiator or oil cooler make sure you can see thru it. I always keep spraying it untill the water running away from the radiator/oil cooler is clean. Also if you ride mud alot then you definately need a radiator washer.
Honda Foreman Forums: Discuss the latest Honda Foreman in our free Honda Foreman forums. Also talk about Honda's other ATV and UTV's including the Honda Rubicon, Honda Rincon, Honda Rancher and Honda Recon