Zetor 8621 Forterra turbo Operator's Manual page 230

PLANNED TECHNICAL MAINTENANCE ' USED OPERATION LIQUIDS
FLUIDS FOR HYDRAULIC BRAKES AND ENGINE CLUTCH
Brake fluid SYNTHOL 205 yellow according to PND 31-656-80
(classification of fluid according to prescription ISO 4925 or
SAE J 1703).
The fluid is not suitable for arctic conditions.
1. Brake fluid must be exchanged minimally once per
two years without consideration of operated hours.
2. Brake fluid of the same classification can be
mutually mixed..
LIQUID FOR ENGINE COOLING CIRCUIT AND FOR CAB
HEATING - TRACTORS Z 8621 - Z 10641
Antifreeze mixture FRIDEX - STABIL, FRIDOL 91 and
dimineralised water in mixing ratio 1:1,5 (add the mixture in the
same mixing ratio). Antifreeze for exchanging abroad must
contain anticorrosion additives saving all materials (including
rubbers and cylinder head gasket) of engine cooling system
and tractor heating system.
1. At tractors Z 10641 the water without antifreeze can
not be used!
2. Exchange the antifreeze after two years of
operation.
3. Fluids FRIDEX - STABIL, FRIDOL 91 can be
mutually mixed. Mixing with another liquids is not
verified.
Use only prescribed antifreeze
AKROS FLUID!
into cooling system of engine at tractor
Z 11641 Forterra!
It is not allowed to add water or another
fluid into this antifreeze!
Exchange after 1200 hours or at least after two years of
operation.
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