What oil to use in outboard lower unit

If the drain seals are in the back of the lower unit. That is NOT a good quality of a lower unit gear oil the oil should be miscible so that it does absorb any water that can get in the lower unit and mix.

Tilt the outboard to the vertical position if it isnt already.

What oil to use in outboard lower unit. This is how to change the lower unit gear oil in an Evinrude or Johnson outboard. We havent checked or changed the lower unit gear oil in this outboard sinc. Best Gear Oil for Lower unit Actually none of the above.

That motor takes Outboard Gear GREASE. No longer made most people use Lubriplate 105 Motor Assembly Grease available from NAPA stores. So you should use Yamaha lower unit oil instead of an ordinary automotive oil which is specially made to help lower unit work efficiently.

As the lower unit is always in the water and in salt water things get more dangerous as it can corrode the interior of the outboard. Simply use the rated standard 90wmarine gear oil and go play. There is no other way to extend gearcase life other than keep it changed.

On that 81 OMC. I would say use any SAE 80W-90 gear oil designed for outboard gear cases. That old motor was alive long before synthetic oil was developed but you can use that also I think keeping contaminates water out of the oil is more important than the brand of oil you use.

Try Walmart for the best price. Dont use automotive gear oil unless you change it several times a season. Water does intrude in all lower units and you will notice as you drain it it will be milky from the water.

Marine grade lubes are able to withstand the mositure and protect the bearings in the lower unit effectively. Changing your oil is a type of preventative maintenance that will help keep your outboard lower unit in prime shape so long as you keep up with it. At the bare minimum you should change the oil out at least once a year and that can be enough for people who only occasionally use.

How to change the gearcase oil or lower unit fluid on your outboard motor. This is the same on just about every outboard motor ever made from 4hp to 350h. Easy to follow video on how to replace the lower unit oil in your outboard motor.

Do this every year as part of the maintenance to your motor. Most sterndrive and outboard manufacturers advise you to change the gearcase oil in your lower unit every 100 hours or once a year whichever comes first. Clean oil is critical for protecting the heavily loaded gears in your lower unit and preventing expensive damage.

Servicing the lower unit is a simple job that you can easily do yourself. Lower unit oil pump. Quart of gear oil.

Put the outboard in a vertical position. The prop shaft should remain parallel to the ground. If the drain seals are in the back of the lower unit.

If they are on the bottom of the nose of the gearcase. Change Your Outboard Motor Lower Unit Gear Oil - YouTube. In this video I will show you step-by-step how to change the lower unit gear oil in your outboard boat motor.

The synthetic oils costs 25- to 50-percent more than mineral-based oil but were talking about a difference of perhaps 700 for a gallon jug. Given the cost of a new outboard even a little 20 HP motor why not use the best oil you can buy. For more information visit Mercury Precision Lubricants and Yamalube.

It was stated that one of the qualities of a good lower unit oil is that it has good water separation qualities. That is NOT a good quality of a lower unit gear oil the oil should be miscible so that it does absorb any water that can get in the lower unit and mix. FREE Shipping on orders over 25 shipped by Amazon.

YAMAHA Yamalube OEM TWIN Outboard HD Heavy Duty Gear Lube Kit wPump 4x ACC-GLUBE-HD-QT Lower Unit Oil 4x 90430-08003-00 Gaskets 4 Stroke V8 F300 F350 53L SHO VMAX F200 F225 F250 42L. Mercury Premium SAE 80W90 Gear Lube is recommended for lower units for outboards below 75 horsepower. Mercury Premium SAE 80W90 Gear Lube should not be mixed with Mercury High-Performance SAE 90 Gear Lube.

Engineered to provide maximum protection for sterndrive and outboard lower units. FWIW I spoke to a person at Pennzoil about using a marine lower unit oil in my cars transmission. The explanation about the difference between normal automotive GL5 gear oil and the marine gear oil was the same as was mentioned above.

The marine oil has different additives to prevent corrosion and also to help with water separation. Reinstall the oil drain screwbolt and its washer or O-ring and wipe away any oil from the lower cowling and the lower unit. Tilt the outboard to the vertical position if it isnt already.

Put a shop towel or rag under the oil filter to catch the oil.