JKOwners Forum banner
1 - 12 of 12 Posts

· Registered
Joined
·
21 Posts
Discussion Starter · #1 ·
I am going to install a set of Poison Spyder Bombshell diff covers this weekend. My question is what gear oil to use. I went to Napa auto parts and they gave me 80W-90 for the front and 75w-140 for the rear and two 4oz tubes of Equa Torque Friction Modifier one for each axel. Both axels are Dana 44 with factory lockers. Why the different oil types for the front and rear. I have a 2012 JK Unlimited Rubicon and it does have traction control if that matters.

I just want to make sure that I have the correct gear oil and if some one knows how much oil I put in both the front and rear axel that would be great.
 

· Registered
Joined
·
392 Posts
75-140 is for towing package if Im not mistaken. If you use full synthetic you shouldnt need friction modifier. 1.35 Quarts in front, 2.35 Quarts in the rear.
 

· Registered
Joined
·
11,420 Posts
Rubicon lockers do not need friction modifier of any sort. Return that.

The 140 for the rear is recommended for towing applications.

Sent via paper airplane
 

· Registered
Joined
·
1,254 Posts
75-140 is for towing package if Im not mistaken. If you use full synthetic you shouldnt need friction modifier. 1.35 Quarts in front, 2.35 Quarts in the rear.
I assumed both Dana 44s carried the same capacity. This explains why I have been spewing fluid out of my breather hose out front since I changed the oil last week.
 

· Registered
Joined
·
11,420 Posts
I assumed both Dana 44s carried the same capacity. This explains why I have been spewing fluid out of my breather hose out front since I changed the oil last week.
Better too full than not enough IMO. Makes a mess, but the alternative sucks. For what it's worth, my 110% factory filled diffs burped fluid on my first long highway run.
 

· Registered
Joined
·
392 Posts
Better too full than not enough IMO. Makes a mess, but the alternative sucks. For what it's worth, my 110% factory filled diffs burped fluid on my first long highway run.
Thats funny, my front was overfilled from the factory also. Made a heck of a mess when I checked it the first time.

Rob
 

· Registered
Joined
·
1,496 Posts
Since no one has mentioned it, 75w90 is what you should run in both axles if you are not doing any towing.
 

· JKO Dickhead
Joined
·
2,597 Posts
Hate to hijack.....buuut.

I just did this today.

now apparently the tourque specs are a little off for the supplied grade 5 hardware that comes with the Solid Diff Cover ( I only found this out after I searched here and after I had an issue with two of the bolts)

my issue is this, two of the bolts started to spin freely with only 25ft of tourqe, figured I would toss them and thrown in the stock bolts until i could get some grade 8 hardware tomorrow.

however upon removal it appears that the bolts are ok, and they may have spun in the housing...the stock bolts wouldnt grab ... I am wondering if I stripped the housing itself ? which would be kind of strange withg only 25ft.. the cover is on thre tight and doesnt leak...I am now concerned that the lowver part will peel since one of the loose bolts is on the bottom.

going to get some new bolts tomorrow and try that, but is this a major issue if teh housing is stripped ?
 

· Registered
Joined
·
264 Posts
Could be an issue,try the new bolts you get tomorrow,if they spin as well you may have to re-tap the holes in the pumpkin.

I'm actually going to be installing my rear SOLID diff cover tomorrow,using a lube locker gasket.

JC
 

· JKO Dickhead
Joined
·
2,597 Posts
thanks... yea, used a lube locker for the first time, and followed their recommended sequence and tourqe specs.... I would say that 15 - 20 is sufficent... and 25 is too much ! lol
 

· JKO Dickhead
Joined
·
2,597 Posts
If the lower bolt is stripped just helicoil the hole and add a new bolt.
u know... this was the first thought i had.... brought me back to my old dirtbike days as a kid, when we would strip our drain plugs ! lol
 
1 - 12 of 12 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top