1979 Evinrude 140 Tilt/Trim Fluid Color

[scott hamilton]

I did trim tube orings due to a leaky wiper. This is color of the fluid. I thought it would be a more red. It has a milky look to it.

Is this a normal color?

 

[Numlaar]

Re: 1979 Evinrude 140 Tilt/Trim Fluid Color

Milky appearance indicates water intrusion into the fluid (probably due to your leaky o-rings). The red color means someone used ATF instead of trim fluid. Trim fluid is actually almost clear with a slight yellowish tinge to it (almost the color of cooking oil). A lot of people use ATF instead (especially with leaky systems), because it is a lot cheaper than the "proper" trim/tilt fluid. I will leave that debate alone...

When you replace your seals, and fluid, all should be well.

 

[scott hamilton]

Re: 1979 Evinrude 140 Tilt/Trim Fluid Color

Thanks. So, do I have to get the old out and replace with new. If so what is the easiest way to do this?

 

[scott hamilton]

Re: 1979 Evinrude 140 Tilt/Trim Fluid Color

Anyone?

Replace the fluid? If so do I have to completely disassemble?

 

[Numlaar]

Re: 1979 Evinrude 140 Tilt/Trim Fluid Color

Definitely change it, water in the fluid can only lead to corrosion problems down the road, as for how, sorry, I have to have someone else chime in... never actually did a complete fluid change on one, and don't want to give you bad advice!

 

[scott hamilton]

Re: 1979 Evinrude 140 Tilt/Trim Fluid Color

Got it. I'm affraid its a disassembly to drain completely. The Evinrude service manual doesnt go into detail getting the unit off the motor mount. Can I remove the TNT without removing engine?

 

[emdsapmgr]

Re: 1979 Evinrude 140 Tilt/Trim Fluid Color

You can partially drain the system by disconnecting the oil line between the pump and the tilt tube. Cycling the unit up and down may pump quite a bit of the oil out into a pan, below. Refill the pump reservoir and rebleed. Continue filling/bleeding till you don't see anymore milky red oil. Eventually you will find that you will have pumped all of the contaminated oil out and a final refill (and reconnect the oil line) should complete your oil change.

 

[scott hamilton]

Re: 1979 Evinrude 140 Tilt/Trim Fluid Color

GREAT! Thanks.