I always use Castrol RS or Castrol Edge 10w60 Sport Synthetic. Motul , the french brand has the excellent 300 V 15 w50 Competition. But it is important the where y0ou live, if its cold or hot climate.
R134a
it holds five and a half if it's an automatic if it's a manual i dont know
1994 Mercedes vehicles were offered with the C220 series with the 2.2L 4-cylinder engine. Synthetic 0W40 and 5W40 can be used in this engine all season. The most current and downward compatible oil specification for this vehicle is Mercedes-Benz (MB) 229.51, which will be written on the oil bottle.
Mercedes Benz recommend Mobil 1 regardless of year and model.
SEAT / Fiat / Peugeot / Mercedes are the most common
What type of transmission fluid is used in a 1995 dodge ram 1500?Read more: What_type_of_transmission_fluid_is_used_in_a_1995_dodge_ram_1500
Dexron III
Type II
r134
R134a
R134a
im sure any 93 and newer Mercedes is on R-134a , some models may have used that refridgerant even earlier