fbpx

 

Hello,

I have a PPC with a 912ULS with about 90 hours, I bought it with 18 hours on it, it's a 2021 model.  I discovered and resolved a small coolant leak from an improperly clamped hose going into my carb heaters (always-on coolant-based carb heaters that were installed 3-4 months ago).  There wasn't too much on the floor, but I would like to top it off. 

The coolant is pink.  I think that means it's Evans waterless coolant from everything I've read here?  I've read most of the posts here about Evans waterless coolant, Roger's statement that you get a 20-30°F penalty running it, and that you can top it off with distilled water, etc.  I would prefer to fill it with actual coolant as I also (in typical years, which wasn't this year) live in a state with the potential for negative temps in the winter, and I'd prefer not to dilute it.  Is it likely it's this coolant?  I can't find anywhere that says what color it is.

Thx,
Toni

 

  • Re: Pink Coolant - Evans?

    by » 2 weeks ago


    My coolant is pink and it's not Evans. Glycol based coolants are commonly red, pink, green and I have also seen blue and yellow.

    I have no experience with Evans, however from what I have read in the past, you can not add water to Evans - it's a waterless coolant.

    If you are unable to determine the type of coolant, I recomend you drain and thoroughly flush the cooling system. Then refill with a good quality glycol type. Record the type of coolant used in your maintenance log. Be sure to use a coolant that is formulated for multi metal, aluminium alloy cooling systems and mix the concentrate to pure water at 50:50 ratio.

     " ..........small coolant leak from an improperly clamped hose............"

    I am always concerned when I hear of people blaming the clamp for a leaking hose. A correctly sized hose/spigot will not leak. The clamp is for security ie to prevent the hose slipping off the spigot and should only be as tight as needed to achieve this.

     


  • Re: Pink Coolant - Evans?

    by » 2 weeks ago


    Thanks for the reply.  Honestly I've not looked real close at the clamp/hose.  It was nearly dark when we landed and that was my first impression only.  The hose is clearly pulled back a bit and dripping slightly from the end, so my assumption was that it's the clamp.  I'll look closer soon.

    I thought maybe it's Evans based on other things I've read where I seemed to surmise that Evans was in new engines.  I was hoping to avoid draining it.

    Good point about not adding water to waterless coolant. 😀 


  • Re: Pink Coolant - Evans?

    by » 2 weeks ago


    Hi Tony

    Evans is blue, not pink.  If you had Evans NEVER add water of any kind, they are not compatible.  Any Rotax engine made after 2014 have the new low volume heads.  Rotax says they are NOT compatible with Evans in that they do not flow the same as the old version heads. Pink sounds like you need to check with whoever sold you the plane so you can match the coolant correctly.  Best advice is never mix the colors,, they all have different blends internally and may not be compatible with other suppliers.

    Cheers


  • Re: Pink Coolant - Evans?

    by » 2 weeks ago


    Thank you.  Looks like I'll just be draining it.


  • Re: Pink Coolant - Evans?

    by » 2 weeks ago


    I agree with RW. One - Evans should not be used. It is bluish in color and NEVER add water to Evans.

    In the USA Dex Cool 50/50 which is extended life and orange in color and so is the cap on the bottle. I tried Evans many years ago and the temperature penalty is definitely not worth it.


    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell


You do not have permissions to reply to this topic.