Thanks.
in line with the previous information about CAT i found the datasheet and they recommends that... “Industrial hydraulic oils may shorten hydraulic pump and component life because they
typically omit or contain reduced levels of the additive agents listed in this publication.
Industrial hydraulic oils are usually formulated to separate water from the oil, a desired characteristic for stationary hydraulic systems. However, in earthmoving equipment this
separated water will cause pump and component damage if it is suddenly drawn through the
system from the tank as the machine moves.”
From Komatsu a similar observation... “There has been a lot of discussion on this subject, but as of this date, the only product recommended by Komatsu for hydraulic system use is SAE10W engine oil that meets API specification CD (or later specification in this series) or MIL-L-2104. At this time, the use of AW series hydraulic oils, such as AW46 are not recommended.”
The use of SAE 10w appears to be the recommended option for hydraulic systms in off-highway equipment (p.e. cat / komatsu). It seems that industrial hydraulic oils dont have the appropiate level of additives.
What problems could i encounter if a sae 10W is used in an industrial hydraulic system, as long as viscosity is the recommended?
When an ATF is considered an option as hydraulic fluid... ?
Greetings