Hey guys, anyone tried Lubegard limited slip additive? Trying to figure out if my experience is an anomaly, or the norm. Changed the gear oil my sister-in-law's '17 Mustang EcoBoost (Trak-Lok) about 5 months ago, using Lucas 75W-90 and Lubegard limited slip additive (all O'Reilly had). Haven't had the chance to ride in the car again until this weekend. I've never heard such moaning from an LSD in my life. Anyone experienced this? Ordered some Redline and the Ford XL-3 additive and will be changing it again this weekend. Will this change fix it, or are the clutch plates messed up now?
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