Octane.. I am getting raped.

[ChefWide]

95 octane is basic regular unleaded here.

98 octane is like $.15 a gallon more.


My understanding of engine dynamics is that the difference between 95 and 98 does NOT warrant the difference in price.

Thoughts?

 

[pitbullstl]

95 octane is basic regular unleaded here.

98 octane is like $.15 a gallon more.


My understanding of engine dynamics is that the difference between 95 and 98 does NOT warrant the difference in price.

Thoughts?

Unless you're running a high performance motor, then no. 93 is sufficient for all high end autos.

 

[IvanOffelitch]

Your octane needs are dictated by the vehicle you drive. Most "performance" cars require a higher octane due to higher compression ratios in the engine to avoid spark knock ("pre-ignition" or "detonation" as it's more commonly referred to). Your owners manual should state the vehicles octane requirements, and it's best to stick to the manufacturer's recommendations. Running poor quality (low octane) fuel can quickly lead to severe engine damage if it's designed to run on high octane gas.

On the other hand, if your vehicle does not require a higher octane rating, you'll gain nothing by high octane gas. As a matter of fact, you may actually lose a little performance and gas mileage.

HTH

 

[Y_lifter]

What ^ said

I run 87 in my 02 Frontier with no problems as that's what REGULAR octane is round here..

 

[Mr. dB]

Unless you're running a high performance motor, then no. 93 is sufficient for all high end autos.

Different octane rating systems. His Icelandic 95 is probably equivalent to our 87.

 

[Y_lifter]

http://chemistry.about.com/cs/howthingswork/a/aa070401a.htm