Below you will find the best synthetic oil for a 1999 Evinrude 9.9 OHC (18.61ci 4-stroke). Maximize your vehicle's potential with 100% full synthetic oil that is made in the USA! For more than the past 50 years, AMSOIL has perfected the art of maximizing efficiency and engine life. The advanced synthetic formulas deliver superior protection from heat, friction, and wear, keeping engines as good as new for miles. Upgrade to AMSOIL today and experience better performance, reliability, and reduced oil consumption. Click add to cart for more details. Sign up as a preferred customer and get discounts and more! The oil type, capacity and oil filter (if available) are listed below and verified for accuracy. Upgrade now!
Recommended oil for my 1999 9.9 Ohc (18.61ci 4-stroke)
| Product Name | Product Description | Capacities | Product |
|---|---|---|---|
| Gear Lube AMSOIL Synthetic Marine Gear Lube 75W-90 |
Fantastic performance for gears and awesome protection from shock loading. Fights foam and keeps extreme pressure standards even when contamination reaches 10% from water. Great lube for V-drives, bow/tunnel thrusters, lower units, sterndrives, and transmissions. Also great for ATVs. Made in USA. |
AGMPK-EA
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Recommended oil filters for my 1999 9.9 Ohc (18.61ci 4-stroke)
| Product Name | Product Description | Product |
|---|---|---|
| AMSOIL Ea Oil Filters | This is the best oil filter for your 1999 Evinrude 9.9 Ohc (18.61ci 4-stroke) and is designed to last up to 25k (normal conditions) or 15k miles (severe conditions) or 1 year, whichever comes first. |
EA15K09-EA
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Maximize the life of your boat and your time in the water. Change from traditional motor oils to synthetic oils. Synthetics resist thermal breakdown, reduce engine wear, and include additives that prolong engine life by reducing wear.
