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Mercury’s Outboard gear oil series is an amazing choice for you when it comes to choosing the best outboard motor for your vessel. They have been at it for quite a while now and have made their mark in the market over and over again.

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History

They originally started in 1939, when automobiles were just starting to mainstream. At this time, Carl Kiekhaefer bought an outboard motor company that will turn out to be a huge success. At the start, he wanted his company to make magnetic separators that were used in the dairy industry. But when he bought the company, he was in for a surprise. The company was housing 300 outboard motors that required repairs. The employees fixed the motors and made them workable.

They just repaired them so that they can free up space. But when they then sold the motors to Montgomery Ward, it turned out to be the Golden ticket for Carl to make his mark. Montgomery Ward liked these motors so much that they ordered more and gave Carl the vision that maybe the future of the company is not in making magnetic separators.

Since then, the company has produced outboard motors and has maintained to be the top name in the outboard market to be the go-to company when it comes to lightweight small motors. They are in competition with Yamaha but still, they are the kings of outboard motors in America. Today they have many different versions of their outboard motors. These motors range from 2.5hp to 400hp.

Mercury SAE 90 High Performance Gear Lube

Genuine OEM Factory Original Equipment Mercruiser Sterndrive & Outdrive Oil
Exclusive formula is engineered to provide extended gear life in extreme conditions including high-speed and high-horsepower applications

Maintenance

The company has been very focused on the environmental impact that the motors have and since the start of the company, they have come a long way in making their motors more environmentally friendly. They don’t offer electric options but still, they make such high-efficiency motors. These motors provide high performance while running as clean as possible.

Now that you have the best of the best for your vessel, you really need to maintain it in a way that it should run smoothly and doesn’t cause the motor any problems. Here is a guide to effectively change the gear oil for your Mercury Outboard Motor.

Mercury Outboard Gear Oil Guide

As you probably know that any and every hardware needs maintenance at some point in their lifetime. This is because the molecular integrity of their surface needs replenishing and maintenance procedures provide just that. It is always important that you choose the best motor for your vessel because that will make your life easier when you want to maintain or repair it.

Some motors on the market nowadays have DIY maintenance kits available that will let you take care of your motor all by yourself. It can be difficult at times but don’t worry. Changing the gear oil is a fairly simple process and you should be able to perform the procedure in under five minutes. So, don’t call the mechanic just yet and follow the guide.

In your Outboard hardware, you should have two screws that are necessary for the oil to be changed. One is right at the bottom of the unit and one just 10 inches above it. The upper screw is to keep the air pressure maintained in the unit and the lower one is to let the oil out and pump the new oil back in.
To remove the old oil, just undo the lower screw and put a container underneath so that it doesn’t spill on the ground and makes a mess.
You’ll notice that the oil is dripping slowly. So, in order to make the dripping happen much faster, undo the upper screw that will let air enter the unit and will make the spillage much quicker.
One thing to note is that, when you change the oil, change the air seals that are around the screws. These seals are your only protection from water entering the motor and damaging the oil. So, every time you change the oil, you should change the seals.
Another reason to change the seals is that mostly these screws have magnetic rings that can attract any foreign iron particles swimming around the oil. If there a few particles on the magnet, it’s nothing to worry about because that’s normal. But if you see that the particles are bigger and have caused damage, you should definitely replace the seals.
Getting back to the oil change, give it about 3 minutes, depending on the amount of oil that needs to come out. You can also check the state of the oil by examining the color. If the color is muddy or if you see water in the oil, then it was about time you changed it because water has been inside the oil and you can tell that when you remove the screw, water will come out because it doesn’t mix with the oil.
When the spillage is done, safely dispose of the oil in the container.
Now it’s time to fill in the new oil.
The oil to be changed comes in two types of containers. One is in a tube-shaped container and one in a bottle with a pump attached to it. The tube-shaped container is not recommended because when you’ll pump it in, there is a real possibility that the oil will spill more than it goes in. Also, multiple tubes might be required. But if you get the bottle version with the pump, you will have control over the spillage.
Once you have the oil bottle in hand. Put the pump nozzle in the top screw and gently pump. This will push air through the whole motor oil line and get rid of any old oil that might be lingering there. When the airway is clear, put the nozzle in the lower hole and start pumping.
How would you know when the motor is full? The oil will start coming out of the top hole. When you see that happening, keep the nozzle in the lower end and screw-in the upper hole. When that end is secured, get the nozzle out of the lower end and put a finger on it to stop the spillage. When you have the screw in your fingers, remove the finger covering the lower hole and put the screw in quickly so that the oil doesn’t spill and makes a mess.
Screw-in the lower hole and clean the little oil that has come out.

You’re done! Also, this is an amazing chance for you to maintain a few other parts as well like the prop and some of the fittings on the engine. Greasing the prop and these fittings will keep them functioning seamlessly, making your motor more efficient.

Mercury SAE 90 High Performance Gear Lube

Genuine OEM Factory Original Equipment Mercruiser Sterndrive & Outdrive Oil
Exclusive formula is engineered to provide extended gear life in extreme conditions including high-speed and high-horsepower applications

Conclusion

Choosing the Mercury outboard gear oil for your boat is equally as important as choosing the right motor. The right gear oil will make your motor run smoothly and seamlessly throughout its lifetime. It often comes down to a matter of preference because there are so many choices for you in the market.

These choices may vary on several different factors like viscosity and other factors that keep the fuel as light as possible which will keep your motor running smoothly. These options include gear oils from Bel-Ray or Liqui Molly among many others, but you really have to choose the one, you’re comfortable with. Another important thing to remember is that you have to maintain your motor once or twice a year because if you don’t keep that hardware maintained, you can seriously damage the motor and that repair job will cost you a lot more than regular maintenance sessions.

When you actually make up your mind for maintaining your hardware, Mercury makes it amazingly easy to find all of the required accessories and parts that one needs to take care of the whole process. They have an online store and a serial number directory that will help look up all of the required accessories in the store. You can perform these maintenance procedures yourself, but we all know what we excel at. And if you think that you are not capable of doing these procedures yourself, then you should take it to a Mercury Outlet to get it serviced by proper professionals.

So, all in all, Mercury Outboard is an amazing choice for your boating needs and maintaining your hardware will keep it running for a long-long time.