Royal Purple vs. Amsoil
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From: Southwest Oklahoma
Royal Purple vs. Amsoil
I am planning on changing all my fluids soon. Would you suggest R.P. or Amsoil or something else? 75w-90 or 85w-140 in the axles? What for the transmission and tranfer case(Synchromax or other)? Thank you very much in advance.
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Joined: Aug 2002
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From: Flat Rock, MI
Re:Royal Purple vs. Amsoil
I am running RP 85W-140 in both diffs and in the spring probably putting Amsoil ATF in the tranny.<br><br>No additive required on the RP for the limited slip. I have heard people adding it with the Amsoil. <br><br>I don't think you can go wrong with either of these brands. 
<br><br><br>Tony
<br><br><br>Tony
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