d06525.fm
SI-912 i-001R5 / SI-915 i-001
SI-912-016R10 / SI-914-019R10
SERVICE INSTRUCTION
20 December 2017 12-10-00
page 7 of 13
Copyright - BRP-Rotax GmbH & CO KG. All rights reserved.
4.3) Waterless coolant for engine types 912/914 Series
The coolant suppliers guidelines must be adhered to when filling or re-filling coolant.
NOTE: EVANS
®
Cooling Systems, Inc. offers its NPG+C coolant worldwide under
several names. For some recent examples, see also the next table. For any
naming, specification or successor products contact your local EVANS
®
Cooling Systems, Inc. Official Partner
4.3.1) Warnings for operating with waterless coolant
- Water or coolant containing water must never be added to the cooling system!
- The max. water content must not exceed 3.6 %; it can be tested using a Brix refractometer.
- Any water present in the cooling system is separated out as vapor. This can cause the cooling
system to fail due to insufficient coolant quantity.
- If EVANS
®
coolant is not available locally for servicing the cooling system, a conventional cool-
ant based on pure 100% ethylene glycol can be used temporarily. However, the coolant must
be replaced again with EVANS
®
within the next 15 days.
SHELL
®
Antifreeze Concentrate
TEXACO
®
Havoline Extended Life Antifreeze
VELVANA
®
FRIDEX G49
YACCO
®
LR-35
Brand Description
Waterless coolant is not permitted for engine types 912 i, 915 i Series or
for 912/914 Series with cylinder head version Suffix - 01.
The certification and determination of the correct coolant type must be
conducted by the aircraft manufacturer. As each aircraft type has different
characteristics, testing must be done to determine the most suitable cool-
ant and instrumentation for each aircraft type.
EVANS
®
coolants are fully operational to -40 °C (-40 °F). It will not freeze
and expand like conventional coolant.
Brand Description
EVANS
®
Aero Cool 180° Europe/Middle East
NPG+C China
Evans High Performance Coolant USA and rest of the world
As some conventional coolants are available in a pre-mixed formula (water
added) be sure to add only 100% pure ethylene glycol if EVANS
®
coolant
is not available.
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