The difference between 87- and 89-octane is subtle. Midgrade gas came around at a time when it was needed, but it has since ...

Does your street-driven car ping now when it didn't use to? It may be suffering from octane creep caused by deposit buildup inside the combustion chambers. New engines on the dyno and regularly ...

With Project Pure Poncho fully broken-in and its power documented (491.8 hp/551 lb-ft), it was now time to begin our research and development work. As a review to those who may not have followed the ...

Some new cars claim to require premium fuel, others recommend it and most new vehicles on the road today are perfectly happy with regular fuel with nary a hiccup. Simultaneously, we're bombarded by ...

For automobile owners looking for ways to get maximum performance out of their vehicle, there is no particular shortage of options that can ensure your engine is, as the saying goes, "firing on all ...

Tugboat was my family's 1987 Dodge Caravan, which faithfully served us for years until its transmission finally exploded one lovely summer afternoon. Her 3-liter V6 was electronically fuel-injected, ...

The fact that you're reading this now means there's a pretty damn good chance you pump gas into your car. And because of that, you've got a combustion engine under your car's hood. Of course, some of ...

Anyone that’s ever topped off their tank or filled up a jerry can knows gasoline comes in different grades, from regular unleaded to pricey premium. Each “flavor” has a number that corresponds to its ...

With a price difference of 24.4 cents between regular and premium gasoline on national average, many people are left wondering if they can save at the pump by filling up their gas tank with ...

Filling up with lower-octane gas will cost less at the pump, but this Hellcat owner found that it may come with some ...

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