Well if you think about it, why would it say to ONLY use premium...because it only uses premium for gas. My dad teaches me about cars and stuff, so...dont put mid grade gas on your car. Follow what it said and you will be fine.
If you mean 2 stroke-oil/gas mix then absolutely NOT. If you mean regular or mid range gas then yes. Be aware though, only about 10% of the cars out there REQUIRE "premium" gas. Mainly the ones you and I couldn't afford anyway.
These cars are absolutely designed and require Premium. They may run on regular, but not happily. (But, they do get great gas mileage!).
The engine maybe but not the whole car. If you get a "knock" in the engine when you use a lesser grade fuel then you need to use premium. Also some manufacturers suggest premium and some folks claim a tune up will last longer with premium. Personally I have never used premium in anything except a couple of really high performance cars. For cars that I used on a daily basis I never found one that I couldn't run on regular gas simply by adjusting the timing. Newer cars the computer will automatically adjust the timing for you. With premium gas running anywhere from twenty to forty cents higher a gallon....it just isn't worth it.
Yes. You may not get the same performance (horsepower) as you would with premium gas, but modern cars can run fine on any grade of unleaded gas.
Premium is required
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.
Premium gas
NO.. it does not need premium gas.. You only have to put premium gas in a car which recommends premium gas. I would recommend a fill up with some mid grade gas atleast once a month...
I used regular gas in my 2009 Murano. Ocassionally, I use the premium when I have extra cash.
The BMW 323 i takes Premium gas,but can use mid grade as well. premium is preferred.
No.