Proper coolant level

[bluespark]

For 2 years I've been running the coolant level on my 11' EC 300 just over the top of the fins, similar to my previous KTM's. I just read the owner's manual and it said to fill to just below the filler cap. I havn't had any problems with over heating or anything, just wanted to hear what others are running in theirs.

 

[TheLetterJ]

Even if you fill it that high, it is going to expand when it gets hot and purge out the overflow... finally settling just over the top of the fins.

I use to top up every ride until I realized that once it settles to the top of the fins, it doesn't drop after that. Unless of course you have a serious boil over!

I took me a few years to realize the right way, which is just like you are doing.

 

[Jakobi]

As above. The hotter it gets, the more it expands, and the more it will purge. If it's overfilled it will purge at normal running temp - and if you keep topping it up it will continue to purge.

My fluid level also sits just on top of the fins. If I add more in it'll be fine until I work it really hard and it'll blow a bit more out.

 

[swazi_matt]

the 2011 has an expansion tank, surely this is why they say to top it up to under the cap?