Selecting the Right Octane

 

What are octane ratings?
Octane ratings measure a gasoline's ability to resist engine knock — a rattling or pinging sound that results from premature ignition of the compressed fuel-air mixture in one or more cylinders. 

CountryMark offers gasoline in four octane grades: regular (87 octane), mid-grade (89 and 91 octane), and premium (93 octane). 

   

   

What's the right octane level for your car?
Check your owner's manual. Regular octane is recommended for most cars. However, some cars with high compression engines, like sports cars and certain luxury cars, need mid-grade or premium gasoline to prevent knocking. 

How can you tell if you're using the right octane level? Listen to your car's engine. If it doesn't knock when you use the recommended octane, you're using the right grade of gasoline.

Will higher octane gasoline clean your engine better?
No, as a rule, high octane gasoline doesn’t outperform regular octane in preventing engine deposits from forming, in removing them, or in cleaning your car's engine. The best advice for avoiding and/or eliminating engine deposits is burning a TOP TIER gasoline

Should you ever switch to a higher octane gasoline?
A few car engines may knock or ping even if you use the recommended octane. If this happens, try switching to the next highest octane grade. In many cases, switching to the mid-grade or premium-grade gasoline will eliminate the knock. If the knocking or pinging continues after one or two fill-ups, you may need a tune-up or some other repair. 

A car's octane requirements can also change as mileage increases. As mileage accumulates, carbon deposits can form in the combustion chamber, which can increase the incidence of engine knock. Deposits raise the compression ratio and can get very hot, thus serving as a source of ignition.

Will knocking harm my engine?
Occasional light knocking or pinging won't harm your engine, and doesn't mean you need a higher octane. But a heavy or persistent knock can lead to loss of power, and overheating of engine parts such as valves, pistons and spark plugs. In severe cases, piston heads can crack or burn, and engine life can be shortened.

Where can I purchase CountryMark PLUS gasoline? 
Visit our growing list of CountryMark retail fuel stations, or contact a CountryMark branded dealer to discuss fuel delivery options.

CountryMark Fuels Power the Indiana State Fair
The 2017 Indiana State Fair will run from August 4-20 at the Indiana State Fairgrounds in Indianapolis. During this 17-day fair, the tractor shuttles will be powered by CountryMark's Premium Dieselex-4, and the antique tractors will be powered by CountryMark PLUS gasoline.
 
CountryMark to Host Biodiesel Celebration
This Wednesday, July 12, we will host Indiana Lt. Governor Suzanne Crouch at our refinery in Mt. Vernon, Ind. We invite farmers, fleet managers and biodiesel supporters to join Indiana's Lt. Governor at our refinery Pavilion at 11 a.m. Wednesday to hear remarks from our CEO, an Indiana farmer and an Illinois truck fleet owner about why they believe in biodiesel-blended fuels. Let's show Indiana's Lt. Governor that we believe in American-made fuels and we support our local soybean farmers!
 
CountryMark Fueling Freedom event raises $50K for military families
Helping to support local military families, the CountryMark system raised more than $50,000 during Fueling Freedom events in Indiana, Illinois and Ohio on Friday, June 23.
 
Fueling Freedom to raise money for military families
On Friday, June 23 between noon and 5 p.m. at participating CountryMark fuel stations, CountryMark will donate to local National Guard Family Readiness Groups.
 
CountryMark fuels new History on Wheels traveling exhibit
The Indiana Historical Society recently debuted a one-of-a-kind history experience focused on sharing Indiana's auto heritage. CountryMark is proud to serve as the key fuel sponsor for the History on Wheels traveling exhibit for 2017.
 
 

facebook   linkedin   Twitter   Youtube