DENVER (KDVR) — Gas pumps in some Western states look a little different than the rest of the country. Most states have the option of choosing octane ratings of 87 (regular), 88–90 (midgrade) and ...

Add Yahoo as a preferred source to see more of our stories on Google. Image credit: Wikimedia Dead money flows through gas pumps across America every single day, yet drivers keep paying premium prices ...

You have a choice when you pull up to the pump. Most gas stations have three choices for fuel for your vehicle, based mostly on octane ratings. Which one is the best for your vehicle? A lot of that ...

With the price of regular unleaded gasoline still in the $4-a-gallon range, the comparative price of premium is kind of a bargain at many stations. Really. When the price of regular surged this spring ...

Is Premium or Mid-Grade Fuel Worth the Extra Money? Premium gas does have the same amount of ethanol as other grades, but it doesn’t provide any more power or contain better additives than regular gas ...

If you go to a gasoline pump to fill up your car, you’re likely to see 3 different types of fuel: Regular gasoline (87 octane), mid-grade (89 octane), and premium (92 or 93 octane). But what do these ...

How high of an octane does your car actually need to run well? Here's what to know about the consequences of using the wrong ...

Premium and Top Tier gas sound good, but what’s really best for your car — and your budget? In some cases, these types of fuel are indeed better for your car — but for different reasons. Premium gas, ...

With all the different engine and combustion theories being tested at the Engine Masters Challenge, it made us wonder about the fuel these powerplants were gulping down. For the 2015 event, we had ...