limited slip gear oli API-GL5 . LS Additive still required? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

niels81gy · 12-21-2018, 03:54 PM

Hi,

when using a LS gear / axle oil that meets API-GL5 & MIL-L-2105D specifications, would I still need to use a limited slip additive as recommended by Chevrolet?

For my 2014 Camaro SS / AT I'm thinking of using either
https://www.ravenol.de/en/products/u...ls-75w-90.html
or
https://www.ravenol.de/en/products/...getriebeoel-sls-sae-75w-140-gl-5-ls.html

Based on API-GL5 & MIL-L-2105D specs, these oils include already up to 6,5% of special LS additive which should make the use of any extra LS additive obsolete.

So is it possible that the recommendation from Chevrolet is from a time where the API-GL5 & MIL-L-2105D was not available and the use of a separate LS additive for limited slip differential was mandatory?

DSX_Camaro · 12-26-2018, 05:39 PM

If it has limited slip additive, you shouldn't need to add more.

captaincog · 12-30-2018, 12:32 AM

I had the dealer put in the Mobil 1 when they did a differential service and my rear end howled in tight corners. I went to a local shop by me and after they put in the limited slip additive it is now back to quiet as normal.

Moral- Noise add the limited slip additive. No noise - good to go.

12-21-2018, 03:54 PM	#1
niels81gy Drives: '16 VW Passat TDi, '07 Odyssey EX-L Join Date: Jul 2017 Location: Germany Posts: 12	limited slip gear oli API-GL5 . LS Additive still required? Hi, when using a LS gear / axle oil that meets API-GL5 & MIL-L-2105D specifications, would I still need to use a limited slip additive as recommended by Chevrolet? For my 2014 Camaro SS / AT I'm thinking of using either https://www.ravenol.de/en/products/u...ls-75w-90.html or https://www.ravenol.de/en/products/...getriebeoel-sls-sae-75w-140-gl-5-ls.html Based on API-GL5 & MIL-L-2105D specs, these oils include already up to 6,5% of special LS additive which should make the use of any extra LS additive obsolete. So is it possible that the recommendation from Chevrolet is from a time where the API-GL5 & MIL-L-2105D was not available and the use of a separate LS additive for limited slip differential was mandatory?

12-26-2018, 05:39 PM	#2
DSX_Camaro Drives: 2013 SW 2LT/RS LFX/AY6 Join Date: Feb 2013 Location: Orlando, FL Posts: 1,741	If it has limited slip additive, you shouldn't need to add more. __________________ K&N CAI, 1LE Strut Tower Brace, Elite Engineering Catch Can and Clean Side Separator, Apex Scoop w/ Washer Relocation Kit, CTS Front Calipers and Rotors, JacFab Ported Intake Manifold, JacFab Intake Manifold Spacer, 80mm Overkill Throttle Body, SS Brake Lines, Ideal Garage Master Cylinder, Monster Twin Disc Clutch, NPP Retrofit w/ Magnaflow Resonated X, ARH Catless Downpipes, JRE Built 3.45 Diff, 1LE Axles, 1LE Hubs, Overkill Tuned, BMR Anti Wheel-hop Kit Stage I, ACS TL1 Hood Insert, ZL1 Spoiler

12-30-2018, 12:32 AM	#3
captaincog Drives: 1971 350RS/SS 4sp Join Date: Feb 2013 Location: Rialto Posts: 166	I had the dealer put in the Mobil 1 when they did a differential service and my rear end howled in tight corners. I went to a local shop by me and after they put in the limited slip additive it is now back to quiet as normal. Moral- Noise add the limited slip additive. No noise - good to go. __________________ Camaros currently owned: 1 2013 1LS 6speed.... Blue Ray Metallic now gone and still have my first Camaro made 42 years before: 1971 RS/SS 350 4 speed Teal Green