Look Here Friends;
There are 3 choices in this family for your consider

R417a composition is
R125, R134a, R600
46.6%, 50%, 3.4%
design for household air-con

R422d composition is
R125, R134a, R600a
65.1%, 31.5%, 3.4%
design for household air-con, refrigeration

R422a composition is
R125, R134a, R600a
85.1%, 11.5%, 3.4%
design for refrigeration, chiller

More R125 more capacity
More R134a more COP
R600 & R600a the reason why no oil change its made compatible between HFC to Mineral oil.

We will be back, friends
Mr.Blue