Below you will find the best synthetic oil for a 2018 Mercury 350 Verado. 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 2018 350 Verado
| Product Name | Product Description | Capacities | Product |
|---|---|---|---|
| Engine Oil 25W-40 Synthetic Blend Marine Engine Oil |
Enjoy fishing and boating while protecting your engine with the best synthetic boat oil for the 2018 Mercury 350 Verado. This formula prevents rust and corrosion and gives you protection under high rpm conditions. Made in the USA. | Capacity 7.4 Quarts |
WCMQT-EA
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| Gear 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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Amsoil’s synthetic oil creates a durable lubricating film that withstands shearing conditions from constant high RPMs. It will help increase the life of your boat motor saving you time and money.


