146
TRACTOR MAINTENANCE
FLUID FOR TRACTOR COOLING SYSTEM    
FRIDEX - STABIL, FRIDIOL 91 or FRICOFIN S and demineralised water in 
proportion 1:1.5 (refilling should be carried out in the above-mentioned pro-
portion). 
Anti-freeze for refilling abroad should contain anti-corrosive additives pro-
tecting any materials (including rubber and head sealing) of the engine 
cooling system. 
NOTE! 
1.  It is forbidden to charge the tractor cooling system with water without 
antifreeze! 
2.  The coolant should be changed after two years of operation. Fluids 
FRIDEX - STABIL and FRIDIOL 91 may be mixed. 
3.  Possibility to mix with fluids of other producers hasn’t been tested! 
 
 
FUEL FOR ZETOR ENGINES WHICH ARE EQUIPPED WITH 
DIESEL PARICLE FILTER 
 
Diesel complies with EN 950 standard 
IMPORTANT NOTE! 
By using motor oil with elevated sulphur content, the service life of 
diesel particle filter can be significantly reduced.