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WE ARE CLOSED ON MONDAY, MAY 27th IN OBSERVANCE OF MEMORIAL DAY AND WILL RESUME NORMAL BUSINESS HOURS ON TUESDAY, MAY 28th
ALL ORDERS PLACED THIS WEEKEND AND ON MONDAY WILL BE PROCESSED ON TUESDAY, MAY 28th
THANK YOU TO ALL OUR ACTIVE AND RETIRED SERVICE MEN AND WOMEN FOR YOUR CONTINUED SACRIFICE TO KEEP THIS COUNTRY SAFE AND FREE. MAY GOD BLESS YOU ALL!
PLEASE HAVE A SAFE MEMORIAL DAY WEEKEND FROM ALL OF US AT MY INBOARD MARINE!

Oil - Engine - Marine Engine Oil 25W-40 One Quart

$14.99 $17.89

Synthetic blend 25W-40 engine oil is formulated for stern drive & inboard marine engines. One Quart Sierra synthetic blend inboard engine oil SAE 25W-40 1 quart bottle Recommended for gasoline...

Synthetic blend 25W-40 engine oil is formulated for stern drive & inboard marine engines. One Quart

  • Sierra synthetic blend inboard engine oil
  • SAE 25W-40
  • 1 quart bottle
  • Recommended for gasoline inboard and I/O engines
  • 4-stroke oil is a blend of premium grade synthetic and mineral based stock with highly refined additives
  • Developed specifically for the marine environment and the high running stresses marine engines encounter
  • Protects internal engine components from rust, corrosion, and from sticking piston rings
  • Features high detergency, anti-oxidants, and antiwear proprties
  • Prevents thermal breakdown under high RPM's, extreme temperatures, and high load conditions
  • NMMA FC-W certified/API-SL
  • Replaces Mercury 92-8M0078629