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Which year model RR do you have and which transfer case LT230 or Borg Warner? If your vehicle is pre-1989 you have the LT230.
The BW uses Dexron II or III auto trans fluid
EP90 for the LT230 transfer case and diffs.
Remove the plugs with a 1/2" square drive socket set bar or ratchet.
On refitting, DON'T overtighten the plugs or you risk opening up the holes (they are a tapered plug) and the plug can fall in. I wipe the threads of the plug with gasket goo to stop them weeping. You could try teflon tape instead.
Originally Posted by 88RANGIE
I'll skirt around it by saying it might have been made in late '88 when the '89 model year came out....
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