Q: Oil changed from 10w-30 to 5w-20 and there were loud clunking sounds in the engine

asked by on

I use 10w-30 oil for my car that has 200,000 miles on it and is regularly maintained. It works well overall. However, when I went to get the oil changed, they put in 5w-20. I was concerned because this is a high-mileage vehicle. After the oil was changed, I drove and heard a clunking noise, which was very loud, so I took the car back to the mechanic. They told me that the engine went out and I need to replace it. I am confused as this never happened before.In fact, I checked the stick, which showed there was no oil at all. Do you have any suggestions what caused this? Is this because they put other weight oil?

No, this is not because they put the wrong weight oil in - it sounds like they forgot to put oil in at all! Or possibly they left the drain plug loose and the oil dumped out as you drove away. Regardless, if there was no oil on the dipstick right after you had your oil changed, they did something wrong and should be held accountable. Next time, I suggest you have your oil changed by someone else. The team at YourMechanic is an excellent option and can perform this service at your home or office.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Oil changed from 10w-30 to 5w-20 and there were loud clunking sounds in the engine

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: Secondary coil replacement for a 2007 ES 350 Lexus

Hi there. That code is set when the primary or secondary circuit for the specified coil has failed. If you are not experiencing any drivability concerns, then it is most likely that the circuit has not failed to the point...

Q: Car overheats only at low speed

Hello. It is possible that the water pump is not pumping properly or that the radiator has a partial clog which is causing the car to overheat at low speeds. Have a certified technician, like one from YourMechanic, complete an...

Q: Vehicle shifts down when traveling 55mph+ when gas is not being pushed

Shift points are controlled by vehicle sensors such as the vehicle speed sensor and throttle position sensor. In addition there are shift solenoids in the transmission valve body and, in the scenario you are presenting, torque converter lock up controls....

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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.