What color should my gear oil looks like

[Evinrudej]

I’ve been using super tech lower unit oil which is yellow color oil. My question is what color would indicate a leak for this type of gear oil. What should gear oil look like after a running for a season? Does anyone have pictures for reference?

 

[matt167]

It will look like chocolate milk if you have water in it

 

[airshot]

Let it sit after draining for a while, if there is water in it, it will begin to seperate. Sometimes there will be lighter colored swirls in the gear lube indicating some water tried to mix in..

 

[Scott Danforth]

It will look like chocolate milk if you have water in it

Agreed, it will look like a cross between milk and pudding, either chocolate with little water, or butterscotch with a lot of water.

 

[Texasmark]

Mercury is easier to diagnose as it is blue-black in color and water shows up easily.

 

[airshot]

Mercury is easier to diagnose as it is blue-black in color and water shows up easily.

Used to be....just bought some Mercury Quicksilver 80-90 gear lube and now it is honey colored !! My old bottle still has the darker color..

 

[Texasmark]

Used to be....just bought some Mercury Quicksilver 80-90 gear lube and now it is honey colored !! My old bottle still has the darker color..

I use the premium so maybe the general purpose is petroleum looking.