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    Jeep Wrangler TJ 4.0 Oil

    New to me 2004 Wrangler TJ with 4.0. 105,000 miles and well taken care of; would like to keep it that way. Thinking either regular Pennzoil 10w30 or Rotella T5 10w30. Does the Rotella still have the ZDDP that I see recommended? Would the ZDDP harm catalytic converter? I'm a big fan of...
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