Just recieved my new compressor today. Manual calls for Mobile Rarus 427 which is a iso 100 petroleum oil. After 50 hrs it says to change breakin oil. I would like to change to the PCK synthetic as I want this to last. Amsoil says 1A on copper corrosion test Mobile says 1B, what is the difference? This will be in a shop that is heated only when I am in there working should I get some 20w oil for the winter or would the 40w synthetic be allright year round?
Amsoil PCK vs Mobile Rarus 427?
- Thread starter SteveU
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copper 1A is No copper corrosion 1B is slightly
more corrosion so a 1A would be better as far as copper bearing corosion goes.
bruce
more corrosion so a 1A would be better as far as copper bearing corosion goes.
bruce
I started using Amsoil ISO 100 in my IR compressor and it has worked very well. The compressor is quite a bit quieter, even in the winter. I only heat the shop when I'm working there for more than 15-30 minuets but the compressor is on stand-by all the time so it runs about 1 every 2 days even if I'm not using it. In the winter the shop will get down around 25-35*F and is normally around 45*F all winter. No UOA yet, remembered to take sample after I was done draining last time, ooops
The synthetic oil will be fine year around. If the mfr calls for ISO 100, stick with that. Especially when you compare the pour points.
Amsoil PCK
Amsoil PCK
Thanks SteveU.
Yeah, I'm not sure what the PP of Rarus is, but I was referring to Amsoil's ISO 46 (SAE 20) and ISO 100 (SAE 40) to answer your year 'round use question. The PP's are -50°F vs -45°F - so close to make a big difference, and certainly not worth going against the recommended ISO 100.
Yeah, I'm not sure what the PP of Rarus is, but I was referring to Amsoil's ISO 46 (SAE 20) and ISO 100 (SAE 40) to answer your year 'round use question. The PP's are -50°F vs -45°F - so close to make a big difference, and certainly not worth going against the recommended ISO 100.
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