Skip the auto shop - Our mechanics make house calls

Q: Transmission damage

asked by on

After I had the oil changed on my two-year-old car, it became a bit noisy. I went to the dealer who told me that differential oil was drained and replaced with transmission fluid, which caused serious damage to the transmission. The shop claimed that only the oil was replaced. The dealer thinks that something has been done after the oil change because it is a couple of quarts over. I haven't messed with the car and I don't know what to do. Do you have any advice for this situation?

A: If you have a manual transmission this shou...

If you have a manual transmission this shouldn’t matter - both the transmission and rear differential take 75W-90 gear oil. If however, you have an automatic transmission, filling the front differential with CVT transmission fluid could be a real issue. I suggest you get a firsthand second opinion from a trained professional, such as one from YourMechanic. They can tell you for certain if the correct type of fluid is in your differential and properly service your differential fluid as necessary.

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: There is a rattling sound when you turn the A/C on and you put the car in gear. Does not usually rattle if car is not in gear.

If the rattling only occurs when the A/C is on, you can conclude that the rattle is coming from the A/C system. If the rattle occurs without the A/C on, then you will need to dig deeper. You have clearly...

Q: ABS light blinks when the car is turned off

This is odd, since generally the ABS light should come on for a few seconds with the ignition ON. My suggestion is to have the system scanned for diagnostic trouble codes which serve as a starting point for further diagnosis....

Q: Transaxle light coming on

With the engine fully warmed up and running in PARK, open the hood and look for the transmission dipstick. Pull it out and give it a wipe. Dip it back into the tube and pull it out, this time noting...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.