This all depends on the compression of your cars pistons, If you have anything over 10 and you opt. for regular Unleaded you might get pre-ignition in your cylinders which will cause a "PINGING" or "KNOCKING" sound usually high-end cars call for higher octane gas. So unless your car calls for premium fuel stick to regular and save a few bucks.
Premium is required
I used regular gas in my 2009 Murano. Ocassionally, I use the premium when I have extra cash.
What color is premium gas
Premium is recommended, but regular unleaded can be used.
you can use regular or premium
higher OCTANE!
For a real answer check out this http://www.cartalk.com/content/features/premium/questions.html Their answer is a qualified yes, it is OK to use regular in modern cars. But read the all the details in the link above.
i am guessing you should use premium gas for a Chrysler 300. Regular is ok unless you have a SRT8.
you will be ok MIGHT notice a very s;ight decrease in performance
That car is designed to use the regular leaded gasoline not the premium gas.
If you accidentally put regular unleaded gas instead of premium in a vehicle designed for premium fuel, the car may experience a decrease in performance, such as reduced power and efficiency. In some cases, you might notice engine knocking or pinging due to premature ignition of the fuel. However, if it's a one-time mistake, most modern engines can handle the lower octane without significant damage. It's best to refill with premium gas at your next opportunity.
regular unleaded , 87 octane