INTRODUCTION
Engine cooling system - Basic instructions
Definitions
Conventional coolant:
A coolant that relies on inorganic inhibitors such as sil-
icates, nitrites, and phosphates for corrosion and cavi-
tation protection.
Organic Acid Technology (OAT) coolant:
A coolant that relies on inhibitors such as organic acid
salts for corrosion and cavitation protection.
47757330
1
The decal shown is located near the fill point of the cooling system.
Decal code: 47757330.
NOTICE:
Never mix OAT coolant with conventional coolant. Under no circumstances should you top up the coolant
system with only water. You can use a refractometer to check the concentration level. Do not use additional coolant ad-
ditives when you use
NEW HOLLAND AMBRA ACTIFULL™ OT EXTENDED LIFE COOLANT
. Change the coolant
solution at the recommended change interval.
If you need to change a machine from conventional coolant to OAT coolant or vice versa, you should follow the
“Changing coolant types” procedure below to attain the full benefit of the coolant.
Changing coolant types
To change coolant from OAT coolant to conventional coolant or vice versa:
1. Empty the engine cooling system by draining the coolant into a suitable container.
2. Fill the system with clean water.
3. Start the engine. Let the engine run for at least
30 min
.
NOTE:
If the machine is equipped with a warm-up system, make sure that you activate the warm-up system to
circulate the fluid through the heater core.
4. Repeat Steps 1 to 3 for a total of two washes.
5. Fill the system with conventional coolant or OAT coolant.
6. Operate the engine until it is warm. Inspect the machine for leaks.
7. If you change to OAT coolant, affix the decal with code 47757330 instead of decal 47488993, to indicate the use
of OAT coolant in the cooling system.
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