[Marvin]

Do you feel it was a good $300 investment? Other than the cool factor I can't get past the cost for zero performance increase.

For me, it was the idea of being able to change (most of) the diff oil without undoing all the bolts and then putting the cover back on using sealant. It means I will actually change it from time to time.

I don't see it as a performance mod, but rather a longevity and peace-of-mind mod.

 

[Mr B]

After 5,000 miles had a small seep with 1-2 drops on floor.. Think it was coming from drain plug so I went ahead and drained oil and got this off of mag plugs. Magnetized sludge I guess, it was on both. Anyway put drain plug back on with extra tape an will see what happens. Cleaned up everything and will keep an eye on it

 

[gsxrdoug]

I wouldn't expect that stuff to look like that after 5K.

 

[Mr B]

I wouldn't expect that stuff to look like that after 5K.

Should have seen it at 20,000 when I put new cover on. The bottom was full, at least 4 tbl spoons. Oil was sparkly both times, just put old oil back in this time, at $90 wasn't going to put new oil in lol

 

[WooBoost]

That is weird stuff. Never seen anything like that. What fluid did you fill up with?

I pulled my dipstick on MH after a few hundred miles and had a little bit of gunk on the magnetic end.

 

[Mr B]

That is weird stuff. Never seen anything like that. What fluid did you fill up with?

I pulled my dipstick on MH after a few hundred miles and had a little bit of gunk on the magnetic end.

AMSOIL Severe Gear SAE 75W-140 (the cheap stuff....not!!!) lol

might want to check after thousand or two

 

[madmaxmutt]

After 5,000 miles had a small seep with 1-2 drops on floor.. Think it was coming from drain plug so I went ahead and drained oil and got this off of mag plugs. Magnetized sludge I guess, it was on both. Anyway put drain plug back on with extra tape an will see what happens. Cleaned up everything and will keep an eye on it

For those of us towing, the manual is clear as mud or at least Mr B's fluid:

"If you are towing a trailer frequently in hot weather, hilly conditions,
at the gross combined weight rating (or any combination of these
factors), consider refilling your rear axle with synthetic gear lubricant
(if the axle is not already filled with it). See the Capacities and
Specifications chapter for the lubricant specification."

and

"Normal vehicle axle maintenance: Rear axles and power take-off units
with synthetic fluid and light-duty trucks equipped with Ford-design axles
are lubricated for life; do not check or change fluid unless a leak is
suspected, service is required or the assembly has been submerged in water.

During long periods of trailer towing with outside temperatures above 70°F
(21°C) and at wide-open throttle for long periods above 45 mph (72 km/h),
non-synthetic rear axle fluids should be changed every 3000 miles
(4800 kilometers) or three months, whichever comes first. This interval can
be waived if the axle is filled with 75W140 synthetic gear fluid meeting Ford
specification WSL-M2C192-A, part number F1TZ-19580-B or equivalent. Add
friction modifier XL-3 (EST-M2C118-A) or equivalent for complete refill of
Traction-Lok rear axles (see Technical specifications in the Capacities and
Specifications chapter for details)."

 

[Mr B]

Thanks for the info, right out of the manual. I realy don't tow a lot but have had some medium loads in the bed a lot.
thanks for the insite This is what I use:

 

[madmaxmutt]

Thanks for the info, right out of the manual. I realy don't tow a lot but have had some medium loads in the bed a lot.
thanks for the insite This is what I use:
View attachment 39779

Yeah, I am pretty sure your Amsoil fits the "or equivalent" category.

Sent from my XT1254 using Tapatalk

 

[WooBoost]

That grease crap is weird, not sure what it is. The whole reason I got a different cover and did the Amsoil, is I don't plan on changing that fluid for a very very long time now.

 

[Mr B]

That grease crap is weird, not sure what it is. The whole reason I got a different cover and did the Amsoil, is I don't plan on changing that fluid for a very very long time now.

that sludge stuff is weird isn't it! But anyway the seep is coming from the input not happy .... I'm taking it in for oil change (engine) in a few weeks so I'll have them replace seal then, that probably means I'll be losing my good oil (Amsoil) in differential,,,,what a bummer $90 down the drain. Hope they don't say anything about cover, actually they should knock off 1 hr of labor because they don't have to take off cover to drain oil. I'll see how far that goes lol

 

[Mr B]

Turned in truck yesterday so today I called to see what the status was and they said that the cover voided the warranty for differential, but said that it was leaking because it was overfull. So I'm getting it tommorow and drain some out and see what happens. So if I change out a radiator hose with a non factory hose the engine won't be under warranty?? Just asking. They were nice about it and understood, but I'll see what happens when I go in person tommorow, I do A lot of business with them for the last 30+ years. Hopefully that's all it is. Will talk to AFE about sightglass level

 

[Marvin]

^^^ I think that's nonsense. They'd have to show that the additional oil and lower diff temp (along with the magnets to scavenge metal shavings) rendered the diff worse off than the factory piece of crap. That's a pretty long bow to draw.

 

[Mr B]

^^^ I think that's nonsense. They'd have to show that the additional oil and lower diff temp (along with the magnets to scavenge metal shavings) rendered the diff worse off than the factory piece of crap. That's a pretty long bow to draw.

Will talk to service manager tommorow or judge (owner) his dad was owner and passed away two years ago so his mom took over and couldn't do it no more so his son resigned his judgeship to run dealership

 

[WooBoost]

Turned in truck yesterday so today I called to see what the status was and they said that the cover voided the warranty for differential, but said that it was leaking because it was overfull. So I'm getting it tommorow and drain some out and see what happens. So if I change out a radiator hose with a non factory hose the engine won't be under warranty?? Just asking. They were nice about it and understood, but I'll see what happens when I go in person tommorow, I do A lot of business with them for the last 30+ years. Hopefully that's all it is. Will talk to AFE about sightglass level

You took in your truck to have them check the diff fluid? You have a lot of time on your hands!

What does AFE says for quarts to fill? I thought it had the sight glass? You can check over fill by parking on level ground and pulling factory fill plug on side of housing, fluid should be at bottom of hole.

If it is overfull though, I would expect it to be leaking from the vent tube, which I believe is on the driver side on these trucks. There is a tube running up directly on top of axle, hose should pull off.

I run 5 quarts in my mag cover, it checks out ok on the little dip stick....I will get under truck this weekend and check if anything leaking. It was not in the past.

 

[Mr B]

You took in your truck to have them check the diff fluid? You have a lot of time on your hands!

What does AFE says for quarts to fill? I thought it had the sight glass? You can check over fill by parking on level ground and pulling factory fill plug on side of housing, fluid should be at bottom of hole.

If it is overfull though, I would expect it to be leaking from the vent tube, which I believe is on the driver side on these trucks. There is a tube running up directly on top of axle, hose should pull off.

I run 5 quarts in my mag cover, it checks out ok on the little dip stick....I will get under truck this weekend and check if anything leaking. It was not in the past.

No I took it in for input seeping, oil change and high engine oil level (tsb). Diff. oil was in middle of sight glass. took 4 qts
Contacted ford rep and AFE Power, waiting now. asked the same thing about plug, Im more concerned about warranty

edit: have case # now from ford

 

[WooBoost]

That makes sense.

If you have 4 quarts, it ain't overfull.

 

[Mr B]

That makes sense.

If you have 4 quarts, it ain't overfull.

I think the dang thang Is seeping and they are giving excuses not to work on it

edit: ford just called don't sound like they will cover it. its pretty much up to dealership. time to find another dealership but will wait to see what happens

 

[WooBoost]

I looked at mine, no leaks on cover or vent tube.

Did not crawl way under and pull dip stick again, My allergies or something went nuts this weekend and I just didn't feel like it.

 

[Mr B]

I looked at mine, no leaks on cover or vent tube.

Did not crawl way under and pull dip stick again, My allergies or something went nuts this weekend and I just didn't feel like it.

definitely coming from input..........still waiting on dealership decision
time for Claritin-D