All FAQs

Should I Buy High Octane Gasoline?

Arnold's Transmission & Gear tells our customers in the Denver area that unless the engine in their car or truck is pinging or knocking, purchasing a higher octane gasoline is wasting their money. In fact the extra cost paid for high octane gasoline can add up to $100 a year - or more! Arnold's Transmission & Gear has learned that some government studies indicate that all combined, drivers across the United States may be paying millions of dollars every year for gasoline with higher octane gas than needed.

Arnold's Transmission & Gear tells our customers that purchasing "premium" (high octane) gasoline is similar to giving your car or truck a "treat", or increasing performance. But Arnold's Transmission & Gear tells our customers that are driving around the Denver area that most cars and trucks only require regular octane. Government studies in fact support that in most cases using a higher octane gasoline than recommended by an owner's manual offer no benefit at all to a vehicle's performance! In other words high octane gasoline will not make a vehicle run cleaner, go faster, or get better gas mileage.

In conclusion the best advice Denver can offer anyone driving around the Denver area insofar as whether purchasing high octane gas is the best option for their vehicle is read the vehicle's owner manual.

Switching to and using a high octane fuel for a vehicle is usually only recommended when a car engine is knocking when using the recommended fuel. It should also be noted that this happens only to a smaller percentage of vehicles.