my husband put Caterpillar 40 oil in my car
Well tell him to take it out, its the wrong oil and do a complete oil change including a new filter and refill with 5W-20 Synthetic Motor Oil (ALMQT), DO NOT DRIVE THE CAR WITH THIS OIL IN IT !
Yes get it out, diesel oil is not for gas engines and you can damage the engine by driving it, complete oil and filter change ASAP.
Search Hyundai Sonata Questions
Hyundai Sonata Experts