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Old May 19, 2026 | 08:20 PM
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2005 e55 AMG
Diff fluid
Any recommendations as to a better rear differential fluid for our limited slip C63 rear ends or just stick with Benz fluid? I'm always poking around for improvements.
Last edited by SICAMG; May 19, 2026 at 08:25 PM.
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Old May 19, 2026 | 09:10 PM
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2013 c63 Magnuson SCed
https://www.fcpeuro.com/products/bmw...z4-83222282583



Wavetrac recommended factory-spec fluid and I use LM in everything.
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Old May 20, 2026 | 02:02 AM
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10 C six trizzle
redline.
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Old May 20, 2026 | 03:42 AM
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12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)

Castrol Syntrax™ Limited Slip 75W-90 as used by my MB dealer at the last diff oil change

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Old May 20, 2026 | 06:19 AM
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Stick with the factory Benz fluid. It’s already got the right friction modifier for the LSD. Swapping to “better” fluids often causes clutch chatter or weird behavior on these diffs. Save your money.
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Old Yesterday | 09:30 AM
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Have you checked the info at https://operatingfluids.mercedes-ben...gory/gear-oil?
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