bobman Posted January 22, 2018 Report Share Posted January 22, 2018 Does anyone know what is the stock power steering fluid coming from factory? I would like to top up mine but don't want to mix the fluids since there is two recommended. Owner's manual recommends either MOPAR power steering +4 or ATF+4 fluids but I have heard mixing them is a bad idea. Quote Link to comment Share on other sites More sharing options...
jkeaton Posted January 22, 2018 Report Share Posted January 22, 2018 I just add what the manual recommends. If they recommend both, then there is no issue with mixing as I'm quite sure the manufacturer would state that as a precaution if it were an issue. Quote Link to comment Share on other sites More sharing options...
bfurth Posted January 22, 2018 Report Share Posted January 22, 2018 Both Mopar ATF+4 and Mopar Power Steering Fluid +4 comply to the same material standard (MS-9602). Everything I've seen from my 2010 Chrysler T&C to my 2015 DJ is that either fluid is acceptable. I have done a replacement of my van's power steering pressure hose, twice. Parts were sourced from a dealership. They sold me ATF+4, even when explicitly told what repair I was performing. Other than the hose failing again, the same way the original did (because of a poorly designed part), I haven't had any issues. Quote Link to comment Share on other sites More sharing options...
bobman Posted January 23, 2018 Author Report Share Posted January 23, 2018 13 hours ago, jkeaton said: I just add what the manual recommends. If they recommend both, then there is no issue with mixing as I'm quite sure the manufacturer would state that as a precaution if it were an issue. I think so. If that’s the case I’ll grab some Castrol ATF+4 from Walmart and top it up. I think they have similar viscosity. It’s interesting how they’re interchangeable for power steering but not interchangeable for transmission. Hmmm.. Quote Link to comment Share on other sites More sharing options...
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