Will this work on my 9.9 hp mercury two stroke?

Probably; it should work on any outboard with an oil filler hole.

Is the right lube for my 2012 merc 50 efi fourstroke?

Yes, this will work for all Mercury outboards and stern drives.

is this good for my 2006 mercury outboard four stroke 40 hp?

If your Owners Manual recommends 90 wt. gear lube this is what you want. There are numerous Mercury Marine websites where you can access info, including YouTube. I was able to purchase a copy of an entire owners manual for my 1977 Merc 4.5 on eBay. Hope this helps.

How many ounces does a Mercury 15hp take ? 32 ounces ?

2-Cycle 6.8 oz. 4-Cycle 6.8 oz., Bigfoot model 8.8 oz., others up to 12.8 oz.

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Description

⚙️ Power your marine adventures with OEM precision and unbeatable gear protection!

TRUSTED OEM QUALITY - Genuine Mercury Marine product ensuring factory-original reliability and performance.
EFFORTLESS APPLICATION - Comes with a hand pump for precise, mess-free lubrication every time.
MAXIMUM GEAR PROTECTION - Advanced synthetic additives prevent metal-to-metal contact, reducing wear and tear.
VERSATILE COMPATIBILITY - Perfectly designed for Mercruiser sterndrives and Mercury, Mariner, and Force outboards.
ENGINEERED FOR EXTREME PERFORMANCE - Exclusive OEM formula extends gear life under high-speed, high-horsepower conditions.

The MERCURYMarine OEM High Performance Gear Lube (91-8M0101435) is a 32 fl oz synthetic gear oil with a 75W-140 SAE viscosity grade, engineered specifically for Mercruiser sterndrives and Mercury outboards. Featuring extreme pressure additives and a convenient hand pump, it ensures extended gear life and superior protection in demanding marine environments.

Reviews

L**G

Good kit! Pump worked swell

Was perfect to get the gear oil changed in my Mercury. Would’ve been eceptional if it came with the seals for the drain plug/fill plug. But those are easily attained at the dealer. This was a great price for this setup, wayyy more at the local marina.

10.10.2024

T**.

Great product just like it said

Great fast shipping perfect

1.06.2025

C**L

Great

Shipped fast, as advertised, included pump and threaded insert made it all hassle free and take just a couple minutes. I have a mercury 40hp 4 stroke so this is enough to charge the fluid in lower twice.

12.03.2025

N**S

Buy it

Great price and works on my 150 merc

10.04.2025

R**K

Matiance for my water ride

Just as advertised new in the package. Just what I needed for my Mercury 150 4 stroke!

11.07.2025

P**N

This product worked great!

Change oil in my lower unit on my boat motor

23.04.2024

S**N

Does the job well

Works great with my 2012 Mercury 60HP four stroke. Three small screws (two vents and a drain) and this screws in the bottom drain hole and does a great job. Just pump until oil comes out the vents then replace the vent screws first then the bottom drain. Makes the job easy.

1.11.2024

J**C

What I needed

Exactly what I needed and will order again

15.03.2025

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E£ 6594

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Material	Metal
Brand	MERCURY
Package Information	Bottle
Liquid Volume	32 Fluid Ounces
Item Weight	32 Ounces
Recommended Uses For Product	Gear Oil
Item Form	Oil
Manufacturer	Mercury Marine/Mericruiser
Unit Count	32.0 Fluid Ounces
UPC	745061948938
SAE J300 Viscosity Grade	75W-140
Number of Items	1
Item Package Dimensions L x W x H	11.89 x 7.8 x 2.8 inches
Package Weight	1.07 Kilograms
Item Dimensions LxWxH	16 x 8 x 9 inches
Brand Name	MERCURY
Part Number	8M0101435

MERCURYMarine New OEM High Performance Gear Lube with Hand Pump, 91-8M0101435

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