My front diff is contaminated with water

[MetalSlug]

front diff on 2010 F50 is having milky in it . It’s been a while . My wife grand father have it before passing on to her . Now I’m trying to do complete maint to it . Owner manual call for 80w90 . I’m thinking put in Walmart super tech 75w90 . Then run it a bit the drain and fill with valvoline 75w90

since Ford front diff is so tight . Only way to take front diff off is to remove power steering rack or complete drop front diff .

I make a post here few day ago how to easy suck out old fluid . I might try turkey blast

 

[AutoMechanic]

Wonder how the water got in it? I’ve never had that happen fortunately. That’s a lot of work for a differential but definitely needs to be done. I’d only take the cover off and replace the gasket and fluid .

 

[Hall]

Need to figure out why water got in there as well

 

[Doc8404]

You sure it’s water?
They look Grey, yellow, milky normally.

 

[MetalSlug]

When I pop the front diff fill plug . All I see is white fluid coming out fast . First though was water .

 

[Jetronic]

water should be below?

Anyway, breather got submerged?

 

[Trav]

water should be below?

Anyway, breather got submerged?

Or the hose broke.

 

[RhondaHonda]

I think people do manage to get the cover off without removing the steering rack. It’s like a frustrating puzzle but I’ve seen it done. I haven’t changed the factory fill in the front of mine yet for this reason.

 

[PontiacHO]

Flooded where he lived?
Some diff vent hoses aren’t very long so flood water could have gotten high enough to submerge vent hose but not enough to flood engine and trans. Suck it out and repeat several times.

 

[Greasymechtech]

Use an emulsifying GL5 marine 80w90 for a couple siphon refills before switching back to demulsifying automotive gear oil.
Yes, if you are sure that you have water, I would repeat several times with the mityvac, fluid extractor, or equivalent.

Check youtube videos as some can remove the cover without dropping diff or the rack. How creative are your mechanical skills?

 

[MetalSlug]

Just done today . I post on other thread

 

[MetalSlug]

 

[Doc8404]

View attachment 48145View attachment 48146

This is NORMAL on an F150.

 

[MetalSlug]

This is NORMAL on an F150.

Lol why you say that

 

[Doc8404]

Lol why you say that

because it is.
at least that’s what everyone on two ford forums say.

 

[MetalSlug]

because it is.
at least that’s what everyone on two ford forums say.

Idk it’s because front diff is 90% not use and it just sat there doing not thing with Dino 80w-90 gear oil . Unless you turn on 4wd then front diff start engage .

 

[Doc8404]

Idk it’s because front diff is 90% not use and it just sat there doing not thing with Dino 80w-90 gear oil . Unless you turn on 4wd then front diff start engage .

good you changed it.
but don’t worry. It is normal.

 

[MetalSlug]

good you changed it.
but don’t worry. It is normal.

Since you say it . I did some google search and found this . I’m glad I dint go with the flush with 80w90 and fill with 75w90 full synthetic . I was being lazy don’t feel like doing couple drain and fill lol . I guess I made the right choice .

 

[CheezWhiz]

nice! gear marking compound has a lot of other uses, btw - i have a smudge on the zero mark on my harmonic balancer, stands out like a lightning bug under the timing light!

 

[Okcafe]

Thats what the fluid in my f150 looks like too. Everything Ive read says thats expected.