The differential on your cart is full of oil. This is to keep the gears from overheating. A good bit of buggy trivia is the weight of oil that gets used in these things. On a gas golf cart, the oil is usually an 80 or 90 weight gear oil. However, on the electric models, all that gets used is a 30 weight motor oil. Not many customers know this, and it can cause issues with parts like the Club Car Rear Axle Seal. The last thing you want is this to blow out and make a mess. That will be the least of your worries too. Now the bearing is exposed to the world. It's only a matter of time before it's toast as well.This golf cart seal is easy to install. All you are going to need is a jack and some stands. A good set of sockets and a buddy to help, and you will have this done in no time. Call Buggies Unlimited today.