Hydraulic Fluid

[Bense468]

What kind of fluid are you guys running for tabs etc.

[Havasu Hangin']

ATF (Tranny Fluid)

[phebus]

Is it compatible with the Mercruiser oil, or do you have to drain what you have and start fresh?

[Havasu Hangin']

I use Mercruiser drive oil in the drives, but ATF for the tab, trim, hydraulic steering and hatch pumps (yes, my boat has a hydraulic hatch).
I would think that the main difference with Mercruiser hydraulic fluid would be the price.

[Bense468]

Thanks hh