From
http://www.rocoil.com/salesbrochure.pdf
Let me state at the beginning that I do not think all of their claims are bogus, but the engineering data and analysis may have been
tainted or overstated by their marketing department.
Quote:
PAOil’s special blend creates less friction and heat and as a result compressors operate far more efficiently.
It appears to be a blend of various PAO cuts and an additive system.
What follows are some items that stood out to me.
Quote:
PAOil is a Polyalpha Olefin, NOT a PAG or an Esther.
A nit, but Esther is a proper name, whereas Ester is the proper description of a chemical. Maybe an Aussie thing?
Quote:
And because PAOil is proven to cause less failures in compressors, you’ll spend less time servicing returns and breakdowns.
What were the failure modes and what oil
supposedly caused each? Most failure modes are due to leaks and or material incompatibilities.
Quote:
Tests prove PAOil reduces compressor RPM
In an automotive environment, the compressor RPM is dependent on engine RPM when the compressor clutch is engaged.
Quote:
Compatible with other lubricants
Quote:
Low Miscibility
So, how is it compatible if it doesn't mix well with other lubricants - how can this be explained?
Quote:
PAOil achieved lower air temperature out of the evaporator.
Quote:
PAO’s clearly produced a lower air temperature out of the evaporator and;
Quote:
- the improved cooling of PAO’s was
confirmed by the higher heat load on
the air and refrigerant systems.
The type of refrigerant used could affect the outcome here. I.E, what refrigerant verses which base oil gave what results? I would be more interested in how much heat rejection was found at the condensing coil location.
Quote:
PAOil will not effect;
- painted surfaces
- Teflon seals
- elastomer seals
PAO by itself will allow elastomer seals to shrink unless there is a seal conditioner included, which is probably why they stated earlier that it was a
Quote:
PAOil...synthetic oil, carefully blended...
Quote:
Increased Capacity
What capacity and under what conditions?
Quote:
In recent independent tests (Report No: 555678-80, Dated October13th, 2004 – Oil Check Pty. Limited) PAOil out-performed Castrol Icematic SW100 and Emkarate RL68H. The oils were tested for wear scar to ASTM D4172 and the scars examined and reported on as
outlined in the following observations.
- PAOil showed a small scar with minimal damage. The oil showed no sign of discolouration.
Perhaps the report could shed more light on these claims such as:
1.) What was the baseline scar?
2.) What refrigerant was used in each of these tests?
Quote:
During tests comparing PAO’s and OEM PAG’s the following was found;
Which PAG's?
