OUR OFFICES ARE CLOSED TUESDAY, DECEMBER 24th THROUGH WEDNESDAY, JANUARY 1st FOR THE HOLIDAYS.
Orders received during this time will be processed when we resume normal business hours on Thursday, January 2nd.

Thank YOU for another great year and we are looking forward to keeping you on the water in 2025!
Merry Christmas, Happy New Year and God Bless YOU!

PLEASE NOTE - Some products are not immediately available. If your order will be delayed, we will e-mail you or call you and let you know.
E-MAIL US HERE about availability and we will respond quickly! We ship same day if your order was placed by 1:00 PM EST during normal business hours BASED ON AVAILABILITY.
NEXT DAY SHIPPING NOTE - Please see our Shipping Policy SATURDAY OR SUNDAY DELIVERY IS NOT AN OPTION.

Premium Blend 10W-30 4-Stroke Oil 1Gallon SIERRA-18-9420-3

$35.81 $43.99


Premium blend 10W-30 engine oil is specially formulated to meet the needs of 4-stroke outboard engines.

  • Sierra premium blend outboard engine oil
  • SAE 10W-30
  • 1 gallon jug
  • Petroleum based formula with highly refined additives
  • Recommended for 4-stroke gasoline outboard motors
  • Developed specifically for the marine environment and the high running stresses marine engines encounter
  • Reduces friction and has excellent anti-wear properties
  • Protects internal engine components from rust, corrosion, and from sticking piston rings
  • Low temperature viscosity
  • Meets or exceeds quality performance API SJ, CF-2 & CH-4
  • NMMA FC-W certified
  • Replaces Mercury 92-8M0078626
  • Replaces Yamaha LUB10W30-FC-04
  • Replaces Mallory 9-82351