So what is the best gear oil to use in the OMC Cobra, Evinrude HPF Pro or Mercruiser High Performance gear oil? Last summer about mid season I had to have the oil changed at a marina due to the oil dipstick coming loose (noticed sheen of oil after a run), and they put in the blue Mercruiser oil. End of the season last year per recommendation of local marina I changed the oil with Evinrude HPF Pro. So as I am winterizing the boat this week I drained the oil and noticed the remnants of the Mercruiser oil actually separate from the Evinrude HPF. Debating if I should just drain the HPF out and stick with the Mercruiser now...
_________________ 2008 H200 Frenzy Edition 5.0 GXi
1993 Horizon 190 5.0 EFI (Sold)
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