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01/31/2012
Maintenance
8.9 Compressor Oil
The following are general characteristics for a rotary screw lubricant. Due to the impossibility of establishing
limits on all physical and chemical properties of lubricants which can affect their performance in the
compressor over a broad range of environmental influences, the responsibility for recommending and
consistently furnishing a suitable heavy duty lubricant must rest with the individual supplier if they choose not
to use the recommended Boss Industries, Inc. rotary screw lubricant. The lubricant supplier’s
recommendation must, therefore, be based upon not only the following general characteristics, but also upon
his own knowledge of the suitability of the recommended lubricant in helical screw type air compressors
operating in the particular environment involved.
Boss Recommended Compressor Lubricant:
DEXRON® III ATF
I.
Specifications
1. Flash point 400°F minimum.
2. Pour point -40°F.
3. Contains rust and corrosion inhibitors.
4. Contains foam suppressors.
5. Contains oxidation stabilizer.
It is important that the compressor oil be of a recommended
type, and inspected and replaced as started in this manual.
The combination of a separator element loaded with dirt
and oxidized oil products together with increased air veloc-
ity as a result of this clogged conditions may produce a
critical point while the machine is in operation where igni-
tion can take place and could cause a fire in the separator
tank.
Mixing different types or brands of lubricants is not recom-
mended due to the possibility of a dilution of the additives
or a reaction between additives or different types.
Due to environmental factors, the useful life of all “ex-
tended life” lubricants may be shorter than quoted by the
lubricant supplier. Boss Industries, Inc. encourages the
user to closely monitor the lubricant condition and to par-
ticipate in an oil analysis program with the supplier.
No lubricant, however good and/or expensive, can replace
proper maintenance and attention. Select and use it wisely.
