fbpx
Jump to Forum..

Engine Coolant Change

in 912 / 914 Technical Questions 9 years ago
Could anyone indicate where I can find the following information in the Rotax manuals for the change of engine coolant.

Periodic maintenance period (Change interval) for engines using Evans NPG waterless coolant


Thank you.

  • Re: Engine Coolant Change

    by » 9 years ago

    Evans is not recommended anymore. It carries a 25-30F temp heat penalty and it;'s expensive. You can't top off the reservoir tank with anything, but Evans. I would change it by the 5 year rubber replacement time period.
    If you have an open air engine or live in cold climates the extra temp may not be an issue. I don't believe there is anything in writing specifically on when to change Evans.

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

      
    Report

  • Re: Engine Coolant Change

    by » 9 years ago

    Evans is good for the life of the engine, it doesn't need to be changed. If you needed to, you can add water or antifreeze to Evans, but you will loose all the benefits of the high boiling point and low freezing point and no corrosion. The only time you need to top up Evans is if you have a leak, as it won't boil over like a normal coolant containing water.
      
    Report
You do not have permissions to reply to this topic.
Related Topics
Title Category Replies
Kitfox 3 with 912 1300 hrs on engine 912 / 914 Technical Questions 5
Assistance to identify connector for coolant temperature sensor 915iS Technical Questions 7
engine preservation (storage) 912 / 914 Technical Questions 1
Engine issue on takeoff. 912 / 914 Technical Questions 16
ROTAX Service Instruction: Introduction of Sodium-Filled Exhaust Valves and New Cylinder Heads for ROTAX® Aircraft Engine Types 912 and 912 i (Series) General Tech Discussion 9