Thanks again. Answered my own question by searching for the specs of paraflu 11 (appears to be fine for 4200 as well as 3200):
Paraflu 11 is a concentrated Etylen Glycol protective fluid for radiators. It is suitable for professional use. Paraflu 11 provides ideal protection for the cooling systems of cars, light and heavy commercial vehicles, tractors and earth-moving machinery.
Characteristics
The fruit of state-of-the-art experimentation at PLI research labs, the fluid responds fully to every prerequisite even in the severest operating conditions.
Mixed with 50% water, Paraflu 11 ensures:
Optimal removal of heat from the engine combustion chamber.
Maximum protection against:
Freezing (down to an outside temperature of -40°)
The formation of scaling;
Boiling in the summer months, in motorway pileups, in city traffic (circuit temperature up to + 110°);
Corrosion of metal elements in the cooling circuits (cast iron, aluminum, copper);
Over-bulking of the rubber and plastic elements in the circuit.
Specifications
FIAT 9.55523, IVECO 18-1830,CONTRACTUAL TECHNICAL REF. N°I002.C00, CUNA NC 956-16, ASTM D 3306 Type 1, ASTM D 6210 Type 1-FF