Skip the auto shop - Our mechanics make house calls

Q: My dad added a quart of regular oil to my car which uses synthetic. He drove it 800 miles before I knew. It hasn't had any probl

asked by on

Is it a problem if my dad added a quart of regular oil to my KIa Soul that has synthetic oil in it. my last oil change was July (3,000 miles ago). Do I need to do an oil change or flush the system? It is an automatic transmission.

My car has 45000 miles.
My car has an automatic transmission.

You should not worry about the addition of normal oil instead of synthetic oil. The oil should be changed at the normal time. The oil system does not need to be flushed. Any time the oil is low you should add oil of the correct weight and try to use the same type as you have in the engine. Keep an extra quart in the trunk of the same oil you use so the next time the same oil is used. Have a mechanic like one from YourMechanic do the next oil change

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!
  • Home
  • Questions
  • My dad added a quart of regular oil to my car which uses synthetic. He drove it 800 miles before I knew. It hasn't had any probl

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: engine knock

If there is engine knock after running low on oil and it does not go away after putting oil in it, then the damage is done. The engine bearings are bad and more than likely ruined the crankshaft, rods, pistons....

Q: Smoke coming out of car and oil level is low

Hello. These are symptoms that you definitely don't want to hear. You are correct, don't start the engine, or drive the vehicle until you are able to get this fixed. Determine where the oil was pouring out (oil drain plug...

Q: Wont start and battery is new. Is a push button car and the brake paddle is stiff

You should check to see if the brake lights are working? Your Kia Sportage may be under recall for an issue with the brake light switch. If the brake light switch is bad then the push button will not work...

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...