Lubricants....

[Mattm94]

Any of you who've been on trips requiring water crossings run marine grade lube instead of auto grade in diff, t-case, etc.... ?

[1911]

Any of you who've been on trips requiring water crossings run marine grade lube instead of auto grade in diff, t-case, etc.... ?

The grade of lube won't matter once it's contaminated with water and mud; either change it after the trip where you had deep crossings, or move your vents up high.

[keezer37]

...or move your vents up high.

Straight up. Gas doors, they're not just for gas caps anymore.

[TACODOC]

Straight up. Gas doors, they're not just for gas caps anymore.

X2

And for zerks it helps to always use a high quality grease like Lucas red #2 etc

[Mattm94]

Vents up high aside, marine grade lubes have emulsifiers that keep moisture suspended, reducing or preventing damage until you can flush/fill.

Anyone run automotive grade gear lube or witnessed the results in a "sealed" lower unit or outdrive?