I've been using 9C for many years and really?had no idea what oil?I
should?really be using. The only information I found was to use a 10W
machine oil and that's what I've been used.
The lubrication chart that was recently posted was a big help. Now I know
what I should be used.
And that got me thinking.
Having been automotive air conditioning mechanic for many years I knew the
automotive A/C oil is a 500 viscosity. Further research tells me the standard
viscosity used in home and commercial air conditioning systems is 150 to 300
viscosity. All of these oils are highly refined low wax content non-detergent
and hold their viscosity through a wide range of temperatures. They can be
purchased in small quantities 1 gallon or less at any refrigeration supplier or
automotive parts store (R12/134A) only.
Standard oils for the R12, R22, are high quality machine oil .? They are
nontoxic and completely safe to use. The oils that I have use have little or no
smell a plus?for anyone that has allergies to strong smells like me.
?
Warning do not using the (PAG) oil use for the 134A refrigerants systems.
This oil is highly toxic and will take the paint off of any surface it comes in
contact with. Do not using it.
Castrol Retro A/C oil used for the? 134A and R12 automotive air
conditioning systems is a 500 viscosity oil and is considered safe to use.
Also some air compressor oils are 100 viscosity non-detergent and should be
suitable to use.
These oils should be a suitable replacement for the Southbend oils if you
can't find the original oils anywhere else.
You can also use non-detergent motor oil as a substitute a 10W oil is the
same as 100 viscosity the. 50W is the same as 500 viscosity. don't know if this
conversion was mention before.
Do not using multigrade oils or standard motor
oils that have detergent in them.
