Power steering fluid vs transmission fluid

[cabinetmkr39]

We had our steering actuator replaced this season mechanic told us to use ATF to refill and we remove air. Why would I not use PS fluid? I did not have a chance to ask mechanic. So I’m posting here. Thank you in advance.

 

[matt167]

Many power steering systems run ATF as a fluid. Depending on which marine power steering system we’re talking about it’s an acceptable choice

 

[cabinetmkr39]

The boat is powered by Volvo Penta 5.0 Gxi

 

[matt167]

Volvo does spec their own fluid but also states in manual that Dexron III ATF is acceptable.. keep in mind that Dex III ATF is a 10w ISO 32 hydraulic oil as is most “ Power Steering “ fluids