Q: Swapping differential fluid--which one to use

asked by on

96 Jeep Cherokee 4 L needs to swap differential fluid Dana 30. The manual says to use 75w-90. Do you think I should use synthetic 74-140 instead because I'm often on road?

Yes, you are going to get more protection that way. If you are on the road a lot and there is a lot of strain, do it. It’s a better oil. If you want to have a technician change the oil for you, YourMechanic can provide the correct oil and perform this task for you at your home or office.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Swapping differential fluid--which one to use

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Where can i put jack stands at in the rear?

Your owners manual will have the best diagram for raising the vehicle. You will see from the bottom that the frame runs along the outer most sides of the vehicle. This is typically the best spot to support a vehicle....

Q: Random fluid leak somewhere under car

You are describing a possible transmission or power steering leak, both use similar fluids. In order for YourMechanic to properly diagnose a minor leak and where it is coming from, they would first need to do a visual leak inspection...

Q: Battery died, jumped it, wouldn't start unless gas was pressed. Once gas was released, engine died.

It sounds like there may be a couple of possibilities here. If the battery died, this may have been a result of leaving the keys on or it may have been a result of the alternator or voltage regulator failing...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.