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03-24-2014
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#1 |
Join Date: Oct 2013
Location: NJ
Posts: 50
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Diff Fluid Change
I'm changing my diff fluid this weekend now that the weather has warmed up. I bought Mobil 1 LS 75w-90 gear lube. My question is do i need a friction modifier or not? I've been reading around and can't find a clear answer to this.
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2003 Z06 Electron Blue/Black 1990 ZR-1 Black/Black #1446 (Sold) |
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03-24-2014
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#2 |
 Join Date: Feb 2011
Location: San Marcos CA
Posts: 1,802
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Re: Diff Fluid Change
One answer is that it is a limited slip diff so you need the friction modifier. The the part you referenced has 'LS' in the part number so I'm thinking that it is pre-mixed in the correct ratio.
If it was me...and i couldn't find documentation on the product to conclusively know one way or the other- I would fill the diff anyways and listen for the groan around corners. You could always buy the additive at any parts store usa for about $7 and put it in after-the-fact. I don't think it will hurt anything on limited slip diffs, it is just noisy and sometimes you can feel the clutches grabbing a bit. If there are no side effects, you are done. |
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03-24-2014
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#3 |
  
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,794
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Mobile 1 75W-90 Differential Fluid
 Says Limited Slip Friction Modifier Added right on the bottle Apparently the label has been upgraded to LS on the new quarts of Mobile 1 75W-90. The older variant of Mobile 1 75W-90 was the same stuff (Limited Slip Friction Modifier Added) without the LS Label. Good time to add the Diferential Case Drain to make sure you get all the old differential fluid removed  See Item #4 LT5 Added Systems
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Left Clickable links  -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 03-24-2014 at 11:10 PM. |
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03-24-2014
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#4 |
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Join Date: Oct 2013
Location: NJ
Posts: 50
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Re: Diff Fluid Change
Great, thanks guys.
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2003 Z06 Electron Blue/Black 1990 ZR-1 Black/Black #1446 (Sold) |
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03-25-2014
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#5 | |
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Join Date: Dec 2012
Location: NC
Posts: 1,786
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Re: Mobile 1 75W-90 Differential Fluid
 Looks like a 'stock' image to me there buddy... How 'bout a snappic of the jam on CLIFF'S shelf??? j/k there Cliff; you're on the ball, man - any time you wanna' road trip and hack on MY Z, the door's open!!! Quote:
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I'm getting my snappics / threads removed blindly as fast as I can, to get in compliance with copyright / license TOS on the boards here (lots of FSM pages and other copyright / license violations on my part; sorry guys). And thanks to all the guys who didn't whine when I posted those FSM copyrighted / licensed stuff in my threads... ( :thumbsup: [b]and to think I complied with a mod's request to delete a pic of him in a Challenge Car in NCM Museum, so he wouldn't get in hot water)[/b] Thanks to several guys here for sending parts FREE; BearlyFlying, WeGone, Geezer, GoldCylon, and more there, TonyD, mike100, fletchusmc... 1990 #2794; 4L60e Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless, Power Effects 3" [IMG]https://lh5.googleusercontent.com/-GHpfzty7DVU/UQn-0Ru2xAI/AAAAAAAAA14/08mz1p4QLD4/s445/Screenshot-5.png[/IMG] |
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03-25-2014
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#6 | |
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Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,794
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Re: Mobile 1 75W-90 Differential Fluid
Quote:
 LT5/ZR-1 Fluids   
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Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 03-25-2014 at 01:56 PM. |
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Linear Mode
