Being a wind turbine technician who works a lot with hydraulics i know that normal hydraulic oil is for moving/creating the presure, provide lubrication and provide cooling.
On most installations there is a set interval to change the hydraulic oil because it ages under heat. For example 10 years.
In our (throw away) cars we useally never touch it even though this also sees a lot of heat being in the engine compartment and constantnly being pumped around there is no real standard on replacing it.
On the other hand i think i never heard a case where somebodies pump failed etc... because of old oil. On the other hand useally a system only contains like 1l or less so it doesnt cost much to change it.
Does anyone have any info on this or data on how it was done on older cars where chaning out fluids was still a service thing?
My bmw contains fuchs pentosin chf11s fluid.
On most installations there is a set interval to change the hydraulic oil because it ages under heat. For example 10 years.
In our (throw away) cars we useally never touch it even though this also sees a lot of heat being in the engine compartment and constantnly being pumped around there is no real standard on replacing it.
On the other hand i think i never heard a case where somebodies pump failed etc... because of old oil. On the other hand useally a system only contains like 1l or less so it doesnt cost much to change it.
Does anyone have any info on this or data on how it was done on older cars where chaning out fluids was still a service thing?
My bmw contains fuchs pentosin chf11s fluid.