Review on 🔴 Red Line Limited Slip Friction Modifier - 4 oz. (Part # 80301) by Brian Messerly

This material is a necessary evil when you have limited slip. Once installed, the advantage was obvious. However, I would design the outlet differently. The easiest way to install differential fluids is to use a rubber hose and just tip the bottle at the end. The spout of this bottle does not allow you to attach a rubber hose. I had to squirt it in the hole and it was a mess. I think the alternative would be to mix it with the diff oil before pouring it in the diff, but my diff was already filled with oil. Good product but why not add a conical spout to the bottle?