darrenclegg@comcast.net Posted July 12, 2021 Share Posted July 12, 2021 owners manuel says ATF fluid for the power steering pump, however it is defiantly not ATF. How to tell the difference between AW-46 and 15-40 diesel motor oil Link to comment Share on other sites More sharing options...
GregOlson Posted July 12, 2021 Share Posted July 12, 2021 I just changed mine on my 2003 monaco and it is Dexron III Tranny Fluid. I bought my fluid at a local freightliner dealership. Link to comment Share on other sites More sharing options...
Dr4Film Posted July 12, 2021 Share Posted July 12, 2021 See this iRV2.com thread. https://www.irv2.com/forums/f115/confused-about-hydraulic-fluid-129102.html Link to comment Share on other sites More sharing options...
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