every time i take my bike out i top off my coolant res. after the day of riding the res is empty and my radiator seems to be a little low. i dont smell it comming out of the pipe no smoke ,oil not milky, any suggestions? dont see any leeks Got another ? I heard 22" sand padles were the best to run what's the best brand and how many paddles?

 

Did you check the water pump seal & shaft? Very common

 

It may be boiling it out, does your fan come on?

As far as paddles, go with extremes or haulers, IMO

 

Two things that would cause coolant loss.

1) Waterpump seals are common failure however since you are not finding anything funny in your oil it is most likely not the issue
2) Head gasket - This can cause coolant to burn off in the cylinder and you will never see it. Or it can pressurize your cooling system and cause you to loose coolant out of your overflow bottle. Look around your overflow bottle after the next time you go for a ride.

Ditto on the haulers. 8-paddle work well and make sure whatever paddle you go with they are 22's and not 20's. You will probably want to drop a gear on your front countershaft sprocket when going to the 22's

 

My fan still works, Ive seen it boil out of the overflow but I thought it was cause I overfilled it. I will watch it when filled to the fill line to see if it comes out. If it is a head gasket should I stop riding it? How hard to replace?

 

How old is the coolant? How long since you flushed the system and changed the coolant? What type of coolant?

 

I also have this problem. I noticed it a long time ago, before I replaced the radiator. I have been running Redline Water Wetter with water only. My fan is on a switch, and I run it all the time once she is warmed up.

I have never seen my coolant boil over, and I have never seen any leakage. How do I determine if it is a head gasket issue?

I think if it is a head gasket, I may retire the old girl. I would love to either get a newer DS or maybe, unfortunately, a different quad all together. I just don't ride the way I used to and this thing is becoming a real money pit.