Q: Transmission damage

asked by on August 18, 2016

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?

Differential / Gear Oil Replacement $106.87 - $126.93 Get a Quote

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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

What others are asking

transmission

With your car having 250,000 miles on it, some mechanical issues may be expected at this point. I am assuming here that the transmission has this many miles as well. This is about the time that all the friction material...

2009 Ford Focus manual Trans.drivetrain light comes on ? Why

Hi Jeff. Thanks for the question today. Warning lights are triggered when a sensor detects an error and creates an OBD-II trouble code then stores it in the ECU. The wrench light typically indicates that routine service or maintenance is...

Does my Jetta have a blown head gasket? 2002 VW Jetta

Hi there - in the absence of extreme indicators of a blown head gasket (milkshake oil, misfiring or coolant mist in the exhaust), we will have to get more sophisticated. Check compression on all cylinders - looking carefully for lower...

Clutch pedal goes to floor

The most likely cause is that the clutch slave cylinder at the transmission is leaking. The leak would be coming from the transmission bellhousing at the bottom, if this is the case. The transmission clutch line from the clutch master...

A/C blows cold cold when driving but hot when idle an drains battery

It sounds like you may have a damaged AC compressor clutch that may be causing a drag on the alternator, resulting in the dimming of the lights due to the alternator not properly charging the battery. As you may know...

Hi Guys My car doesn't want to select gears anymore. I have to force the gear in everytime. could it be a problem with the gearbox

The problem may be the transmission clutch is not disengaging enough to allow the gear change. Have the clutch checked first for proper operation. If clutch is operating good then the problem is with the synchronized gears inside the transmission...

Car acceleration is slow to respond to gas pedal

Hi there. From your description I am going to assume you try to accelerate and the engine speed does rise, but it feels like the transmission doesn't engage until a higher engine speed and then it catches. In this case,...

Transmission not shifting gears, engine died out

Hi there. It sounds like the engine is the issue and not the transmission. If the engine was low on oil, then that will cause a serious engine failure. As the engine failing can cause some strange shifting issues as...

Oil leaking out

I would ask for help from a mechanic at YourMechanic. They can come to you and properly diagnose your oil leak.

Related articles

The Best Used Cars to Buy If You Just Got Your License
If If you are a new driver, congratulations on getting your license. Now, you need to think about what type of vehicle to buy. Ideally, you’ll choose a used car that isn’t overly expensive, and is reliable and safe while...
What Is the Shelf Life of Motor Oil?
If you plan on storing your oil, it's good to know how long motor oil lasts. Store your motor oil in a cool, dark place to make your oil last longer.
Why Are 5W-30 and 5W-20 Oils So Common?
Changing oil is one of the most important car care tasks. Most cars use 5W-20 or 5W-30 oil because those oils work best in hot or cold temperatures.