Can you use 80 90 gear oil in an outboard?

Can you use 80 90 gear oil in an outboard?

You can use any brand of lubricant that has a grade designation of API GL5 SAE 80 or 90 weight.

Is yamalube gear oil Synthetic?

YAMALUBE 4M FC-W® Full Synthetic SAE 5W-30 Group IV fully synthetic oil oႇers our best outboard lubrication and performance, and it’s FC-W® rated by the National Marine Manufacturers Association (NMMA®).

Is there a difference between gear oil and marine gear oil?

Marine gear lube, unlike automotive gear lube, is formulated to emulsify water. This serves two purposes: It provides consistent lubrication, keeping water away from moving parts. It keeps the lower unit from freezing (yours didn’t freeze last winter, did it?)

What color is yamalube gear oil?

Then they have their HD Yamalube. Here in the glass jar is the regular gear oil. This is used in almost all of the Yamaha outboards with only a couple of exceptions that we will talk about next. Both the HD and Regular Gear Oil are a Yellow or Brownish color.

How often should outboard lower unit oil be changed?

every 100 hours
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.

Can you use regular gear oil in a boat?

So, can you use any old gear lube in your marine lower unit? If you want the best protection possible, and want your lower unit to last as long as your boat, then the answer is no. Consult your engine’s manual and look for the proper marine gear lube for your application.

Why is gear oil black?

The black color in the gear lube is from the wear of the gears, bearings and mating surfaces of moving parts in the unit. The amount of metal in the lube (not chips or slivers, that’s different) wll increase depnding on the load/use or the fit of the parts in the unit.

What is SAE 90 equivalent?

An SAE 90 gearbox oil is roughly the same viscosity as an SAE 50 engine oil. Most manufacturers now offer EP80W/90 oils in place of both EP80 and EP90. In viscosity terms, this is analagous to using a 20W/50 engine oil in the sump, and will do no harm.

What type of oil is SAE 90?

SAE 90 refers to the SAE class according to which the transmission oil has been classified. This classification is made by the Society of Automotive Engineers. These are monograde oils which are mainly used at temperatures above freezing point.

Why is gear oil brown?

Dark Brown Opaque What It Means: Your transmission fluid is old, dirty, and contaminated and doesn’t provide adequate lubrication.