The mk3 came with G11 coolant. The mk4 came with G12 coolant. I'm running G12 in a well-flushed mk3 radiator, and I have no problems.
Best Antifreeze for Volkswagen Golf
Other spare parts for Volkswagen Golf
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Tires -
Brake pads -
Engine oil -
Wiper blades -
Spark plug -
Battery -
Oil filter -
Shock absorbers -
Brake discs -
Alternator -
Headlights -
Water pump -
Ignition coil -
Engine radiator -
Timing belt -
Strut assembly -
Cabin filter -
Antifreeze -
Fuel pump -
Clutch kit -
Brake caliper -
Turbocharger -
Fuel filter -
Gear oil -
Fog lights -
Glow plug -
Intercooler -
Bushings -
Heater core -
Brake fluid -
Pistons