Hehe, hey Ryan, welcome to the fun. Well it's your fun at the moment, anyway, if you have a new compressor I would check that it is not already charged with oil. Going by the MB a/c manual for the 116 model, the compressor
for the engine 617.950 came with 170cc of oil precharged. If yours has no oil I would not bother trying to buy it and put it in yourself, you will probably need to buy a litre/quart as a minimum and it's not the kind of stuff you get
at your local parts store. You need to decide which refrigerant you are using and make sure you have the right oil, if you use R134a you MUST have synthetic POE or PAG type oil, if you use R12 you can use mineral or
synthetic. If you have a shop that will vac and charge the system for you I would leave it to them to put the oil in, but make sure it's not already in there.
Check the climate control manual in the library, look under the manual a/c section (section 1), job 83.520 gives the specs you need.