Need Help with Diff fluid
Thread Starter
Burning Brakes
Joined: Jan 2008
Posts: 1,120
Likes: 1
From: Biloxi Ms
Need Help with Diff fluid
Ok, seems that one of my mechanics (my oil change mechanic) some time ago changed the diff fluid in my 06 Tundra and now I am getting this buzzing sound. They said it should be fixed with a thicker diff fluid, but considering it didnt buzz before them, I dont think I want to let them touch it again.
So I think I am going to do this myself.
Just curious what is the thickest diff fluid you can put into a 06 Tundra.
Thanks for the help in advance
So I think I am going to do this myself.
Just curious what is the thickest diff fluid you can put into a 06 Tundra.
Thanks for the help in advance
Melting Slicks
Joined: Jun 2004
Posts: 2,923
Likes: 7
From: Live Free or Die. N.H.
Crawl under your truck and check the diff.cover for a sticker that should say LSD FLUID ONLY.Most Tundra's came with lsd's and i'm betting he didn't add the proper additive to quiet the clutchpacks in the diff.
Let me know if this is the case.
Let me know if this is the case.
Melting Slicks
Joined: Jun 2004
Posts: 2,923
Likes: 7
From: Live Free or Die. N.H.
Ok,no sticker.It might have been pulled off.But none the less 80W90 is about as thick as you can go.I would still add a bottle of lsd additive especially if its a TRD model.Three things when doing the change,loosen the top fill plug and let some air in the case as it will flow out faster when you drop the drainplug.Also check both backing plates for wetness as sometimes the axle seals do leak.Third make sure the vent breather cap for the diff is not clogged it should move freely on its top cover.
Thread Starter
Burning Brakes
Joined: Jan 2008
Posts: 1,120
Likes: 1
From: Biloxi Ms
Ok,no sticker.It might have been pulled off.But none the less 80W90 is about as thick as you can go.I would still add a bottle of lsd additive especially if its a TRD model.Three things when doing the change,loosen the top fill plug and let some air in the case as it will flow out faster when you drop the drainplug.Also check both backing plates for wetness as sometimes the axle seals do leak.Third make sure the vent breather cap for the diff is not clogged it should move freely on its top cover.
hopefully this will cure the buzzing/ rubbing sound i have
Thread Starter
Burning Brakes
Joined: Jan 2008
Posts: 1,120
Likes: 1
From: Biloxi Ms
usually runs 70 degrees here lately and will get up to 100s in the summer.
plus i usually drive my truck on the highway for about an hour an a half at about 85- (well lets just say higher then 85)
You think thats too much, cause they did have an 85w90 but remember i am trying to kill a buzzing or rubbing sound that speed related
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Thread Starter
Burning Brakes
Joined: Jan 2008
Posts: 1,120
Likes: 1
From: Biloxi Ms
Also, I just crawled under to look at the setup again. It has the following that I am not sure about so I figured maybe you can help me.
There appears to be what looks like a tire air valve on the very top of the diff case that has a cover over it, what is that for? do I need to bleed the air out?
There appears to be what looks like a tire air valve on the very top of the diff case that has a cover over it, what is that for? do I need to bleed the air out?
Last edited by TKT-MKR; Feb 2, 2010 at 02:47 PM.
Melting Slicks
Joined: Jun 2004
Posts: 2,923
Likes: 7
From: Live Free or Die. N.H.
Also, I just crawled under to look at the setup again. It has the following that I am not sure about so I figured maybe you can help me.
There appears to be what looks like a tire air valve on the very top of the diff case that has a cover over it, what is that for? do I need to bleed the air out?
There appears to be what looks like a tire air valve on the very top of the diff case that has a cover over it, what is that for? do I need to bleed the air out?
Melting Slicks
Joined: Jun 2004
Posts: 2,923
Likes: 7
From: Live Free or Die. N.H.
Ok,at this point it needs to be safely hoisted in the air in drive to see if the noise is coming from the ring gear area or a hub bearing.Also check your driveshaft u-joints for play with the transmission in neutral.The driveshaft itself has several grease fittings in the joints and the slip-yoke of the shaft itself.
Thread Starter
Burning Brakes
Joined: Jan 2008
Posts: 1,120
Likes: 1
From: Biloxi Ms
Ok,at this point it needs to be safely hoisted in the air in drive to see if the noise is coming from the ring gear area or a hub bearing.Also check your driveshaft u-joints for play with the transmission in neutral.The driveshaft itself has several grease fittings in the joints and the slip-yoke of the shaft itself.
Of course thats almost 3500-4000 dollars
Melting Slicks
Joined: Mar 2001
Posts: 3,260
Likes: 64
From: League City TX
Melting Slicks
Joined: Jun 2004
Posts: 2,923
Likes: 7
From: Live Free or Die. N.H.
What let go,should say on the reciept.Bet it'll be cheaper getting a used unit and having it installed just make sure the gear ratio matches the old.
Thread Starter
Burning Brakes
Joined: Jan 2008
Posts: 1,120
Likes: 1
From: Biloxi Ms
personally i think that is bunk and just a way for them to fix the problem as easy as they want.
will see though.
probably just get a new truck
