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Best recommended synthetic oil, filter, transmission fluid for my 2005 Yamaha 40A (3-cyl. 2-stroke; 42.59cid)

Motor oil designed for your 2005 Yamaha 40A (3-cyl. 2-stroke; 42.59cid)

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Your Vehicle's Information

Year:

2005

Make:

Yamaha

Model:

40A (3-cyl. 2-stroke; 42.59cid)

Engine Size:

40.0

Engine #:

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Below you will find the best synthetic oil for a 2005 Yamaha 40A (3-cyl. 2-stroke; 42.59cid). 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 2005 40a (3-cyl. 2-stroke; 42.59cid)

Product Name Product Description Capacities Product
Engine Oil
HP Marine Synthetic 2-Stroke Oil
Great for Evinrude® E-TEC™ factory-lean setting (this replaces the Evinrude XD100™ 2-Cycle Oil). Superior performance as an injection oil or at 50:1 pre-mix. Prevents deposits, shields against wear and tear, low smoke, fights rust and has minimum aquatic toxicity. Made in the USA! HPMQT-EA
HP Marine Synthetic 2-Stroke Oil HPMQT-EA
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Engine Oil
Synthetic 2-Stroke Injector Oil
Our synthetic 2-stroke injector oil will minimize wear and tear and protect the life of your engine. Protect your engine with this lube which has reliable film strength, protecting piston scuffing and bearing damage. Made in the USA! AIOQT-EA
Synthetic 2-Stroke Injector Oil AIOQT-EA
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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
AMSOIL Synthetic Marine Gear Lube 75W-90 AGMPK-EA
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Extend the life of your boat. Protect the gears inside from sludge and friction. Using a quality oil will keep your boat running great for many years and save you repairs. Not sure if you are using a top brand? Does your mechanic just put in whatever oil he thinks is the best? Have peace of mind and get Amsoil now and have it changed! We are positive you will love our oil.

Playing hard? Give your marine engine the help it needs by switching out conventional oil for synthetic. The uniform nature of synthetics prevents thinning – keeping your engine running even at constantly high RPMs.


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If you're looking for another year, make or model instead of this 2005 Yamaha 40A (3-cyl. 2-stroke; 42.59cid) motor oil, try one of these similar models below. We try to keep one page for each model vehicle.

Don't know if your engine is protected from sludge? It can clog parts inside the engine and prevent full engine protection. Amsoil will reduce the sludge and keep your engine rockin' and rolling for extended periods of time.

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