Front diff leaking in rear at front driveshaft?

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07-06-2013, 07:13 PM

#31

Nick060200

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BTW i dont think its blow by because like the other poster the top is not covered. i use synthetic 75w90. can i use something heavier? i dont use 4x4 often

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07-10-2013, 02:53 PM

#32

Shorts

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Quote:

Originally Posted by Nick060200

would this be the seal?
just noticed a few days ago. i was thinking of getting a front diff cover with a sight glass so i can keep an eye on the fluid.

Yeah, that's your pinion seal.

Had the dealer do mine earlier this year when it let go.

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07-10-2013, 04:36 PM

#33

Nick060200

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Can it be let go for a while if i used a heavier oil and kept an eye on the fluid? Also does it only leak out when using 4x4?

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07-21-2013, 06:33 PM

#34

Rednecktastic

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Mine wasn't that bad but close. I had some old 75/140 (whatever the 1500 Ram uses). Not enough to fill it but I put that in when I changed the fluid and filled it the rest of the way with the lighter 75/90 syn fluid it calls for and it never leaked again. Kept using 75/140 and no more leak for like 4 years and sold the truck that way.

If the climate you are in is super cold I'd probably fix it but if you are in a warm climate just use the 140. I believe it meets spec, read your manual.