For you to keep your differential in optimum performance, consider buying the recommended differential oil. Since most cars only have a rear differential, their owners can go for the conventional oil. However, if your car has a front differential, there is more to it than just conventional oil.
Since front differentials are built into manual transaxle, it follows that you will need differential oil that sips in better. It is for this reason that full synthetic or synthetic blend oils are recommended for front differentials. On average, you will spend between $55 and $77 for a change...

