320 OMC mustang hydraulic oil?

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foton

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I think those use 10/30 engine oil in the hydros as do many from that time period
 

Mustang Guy

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You can't go wrong using multi-grade hydraulic oil - ISO AW 32/46/68. I use it in all my equipment.
 

Skidek

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You can't go wrong using multi-grade hydraulic oil - ISO AW 32/46/68. I use it in all my equipment.
i have ATF in hydraulic system. Would like to change to new oil. Can you tell me how I can drain all of oil? Use Auxiliary Functions on the fron or how?
 
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Mustang Guy

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Apr 12, 2016
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i have ATF in hydraulic system. Would like to change to new oil. Can you tell me how I can drain all of oil? Use Auxiliary Functions on the fron or how?
You'll never get all of it out with in one draining. If you're going to continue using ATF just drain the reservoir and top up with fresh oil. If you're going to change oil types that will require two oil and filter changes and thoroughly cycling through all functions in between changes.
 
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