R-22 is still available, because of this there is no need for a drop in. So there is none.
Wal-Mart do not have r22 freon, this is a false ad.
r22a
No
no.
12 r22
sorry, no.
No
No
yes
No, R22 is for refrigerators and home AC. It runs at a different pressure and you can't use one for the other.
no. it is not a good idea. new hfc refrigerants require a different type of oil than the R22 units. the new refrigerants typically run at higher pressures than the R22 units.
No. There'll still be residual traces of R22, even if the cylinder is empty, and it won't blend with the R404A. Furthermore, the R22 cylinder will be labeled as such, and it's actually a crime to have such cylinders improperly labeled.