Difference between synthetic and mineral oil in NH3 systems

[cdelefor]

Is the separation of synthetic oil in NH3 systems better then mineral oil?
Is it easier to drain synthetic oil in stead of mineral oil?

[chilldis]

In my twenty + years in the trade I have found that synthetic or semi-synthetic oils are better at keeping a system clean, better at oil return from oil seperators and much easier to bleed off from oil pots. I have also found that compressor bearing life is extended by almost double. I have had very good results with Camco 717SC oil (it contains a very good seal conditioner)

[charlie n]

I've seen excellent separation between PAO oil and ammonia in oil pots. In fact, it separates so well that the oil can be returned to the crankcase of the compressor in a flooded chiller without getting much ammonia back with it.

[CHIEF DELPAC]

What is the price difference between the oils? C.D.

[chilldis]

the synthetic oils I have used are on average 20 to 30% higher in cost than conventional mineral oils