Skip the auto shop - Our mechanics make house calls

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?

A: Yes, you are going to get more protection t...

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 1000 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!

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: Do differential and gearbox use the same fluid on a 2000 Toyota Corolla?

No, they are telling you the truth. If it was a '92, then yes. They had differential oil on one place and other oil on another. But on yours, it's all the same fluid. They are telling you the truth...

Q: Car won't go forward and is leaking - 1992 Mercedes Benz 300TE

Hey there. If the line is broken, then it has to be replaced. The line is a special transmission cooler line. You may need to use dealer supplied parts for this repair only. The transmission should not be tried to...

Q: Question about the longevity of a high-mileage vehicle

You've got a lot of miles on it. Those inline six's are good engines. Just keep doing what you are doing and see what happens. As long as you are not seeing any major symptoms, you should be clear. And...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.