How to replace the gear oil in a Mercury Marine outboard?
How to Replace the Gear Oil in a Mercury Marine Outboard Engine. Step 1. Place a drain pan suitable for used oil disposal beneath the outboard’s lower unit before you begin to change the lower unit oil. The pan Step 2. Unscrew and remove the drain plug located near the port-side bottom of the …
What kind of lubricant do you use on a Mercury Marine engine?
Insert nozzle of a tube of AMSOIL Synthetic Marine Gear Lubricant, Mercury’s proprietary gear oil into the lower unit drain hole. Squeeze the lubricant up into into the lower unit, from the bottom of the tube. You may need more than one tube of gear oil.
What kind of oil does a Mercury 4 cylinder use?
Mercury 25W-40 Synthetic Blend Outboard Oil meets the stringent marine operational requirements of all of Mercury’s new 4 and 6 cylinder models. First in class for all FC-W durability test properties with industry-leading internal Marine engine corrosion protection.
When to change the oil in a MerCruiser lower unit?
Every 100 operating hours or once yearly, you are supposed to change the gear lube in the lower unit of your Mecruiser sterndrive. If you do not adhere to this schedule, when you finally do get around to changing the gear lube, the oil will be filled with chunks of brass that were formerly your gears.
What kind of oil does a Mercury outboard use?
Genuine Mercury & Mercruiser parts. Mercury outboard, MerCruiser and Mercury Racing oil & lube charts Not sure what type of oil you need? See our Mercury Marine recommended engine oil chart
How often do you change the gear oil on a Mercury outboard?
Once a year, as you prepare to put your Mercury outboard into storage, you face a variety of maintenance tasks. One of these, changing the gear oil, meets Mercury’s maintenance requirements and gives you a glimpse into how the engine’s gears are holding up.
How much oil is in a MerCruiser crankcase?
CAPACITY CHARTS Crankcase Oil Capacity Chart – MerCruiser Gasoline Engines (Cont.) Model Oil Capacity Std. (QT)Std. (QT) Metric (L) BF2A/BF20 .05 .04 BF5A/BF50 .10 .09 BF8A/BF80 .23 .22 BF75/BF100 .23 .22 BF9.9A .254 .240 BF15A .254 .240 BF25A .30 .28 BF30A .30 .28
Where is the gear oil plug on a Mercury outboard?
The vent plug is located near the top of the lower unit, almost straight up from the drain plug. As soon as you loosen the vent plug, the flow of gear oil from the drain plug will steadily increase. Remove the washer and stow it next to the drain plug.