Its time to change my 1999 mercury 175 efi lower unit oil and i can't remember which is the best to use..I put quicksilver high performance in last time but i was looking today at the store and they had the quicksilver high performance but its straight 90 weight..Is this right..I can't remember what weight it was last time..Thanks fellas
Mercury or Quicksilver HIGH PERFORMANCE Gear Lube is a SAE 90 weight, FULLY Synthetic Gear Lube.
Its' the ONLY lube I recommend for these gearcases.
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
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thank you very much
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