Where can I buy ester oil for my A/C?

in General
I'm rebuilding the A/C system in the 244 from scratch. I'm currently tearing down the compressor while I wait for a rebuild kit to arrive. Very cool little devices those old York compressors.
Anyway I can regas the A/C, but I'm looking for 1.1L of ester oil to re-prime the system once it's reassembled.
Anyone know where I can find it?
Anyway I can regas the A/C, but I'm looking for 1.1L of ester oil to re-prime the system once it's reassembled.
Anyone know where I can find it?
Comments
If you get a new receiver dryer and the correct orifice tube you can run R134a
also seems hychill is able to be used with r134a oil.
hychill.com.au/pdf/recproce.pdf