Muffler cleaned put and a brand new receiver dryer, and filled with correct modern oil for use in R12 units, after draining unknown amount of prexisting oil in compressor. System works fine (and has for a month or so since being filled). It just leaves the oil film under the hood. When it was filled, the pressures were well within midrange of the spec and nowhere near the max. If I recall correctly, he filled it to the point where the bubbles in the sight glass just disappeared, which was less than the actual fill spec. I was behind the wheel at the time checking the outlet temps.
As an added bonus, the oil was dispersing on the exact same plane as the power steering pulley groove on the crank pulley...so you guessed it - extra squeeling from the power steering belt. Its definitely the ps belt as I removed all the belts to isolate the squeel and that was the only belt that made the noise.
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