Genuine Ford Fluid XL-3 Friction Modifier Additive – 4 oz.

Customers find the friction modifier effective, with one mentioning it works well with their 2016 F150's front limited slip differential. The product receives positive feedback for reducing chatter, particularly noting that rear-end chatter disappears after 75 miles of use. Customers appreciate its quality and value for money, while also praising its noise-reducing capabilities. The product has a strong odor that customers find unpleasant.