oil

[steved]

Here is an interesting article I found that might interest people on this gas dispute.

http://oldeloohuis.com/octane.html

[churp]

Originally Posted by steved

Here is an interesting article I found that might interest people on this gas dispute.

http://oldeloohuis.com/octane.html

Boy that guy likes to write!!!! The last 2 paragrahs sum it up though.

THE LAST 2 PARAGRAHS ARE:
"On modern engines with sophisticated engine management systems, the engine can operate efficiently on fuels of a wider range of octane ratings, but there remains an optimum octane for the engine under specific driving conditions."

"If you are already using a fuel with an octane rating slightly below the optimum, then using a higher octane fuel will cause the engine management system to move to the optimum settings, possibly resulting in both increased power and improved fuel economy."


I'm about the oldest codger on this site, and these 2 paragraphs say it all. On pre-engine management engines 8 or 9 pounds of compression ratio would run efficiently on regular (87 octane), any more compression and you would have serious knocking if going up hill or accelerating faster than a snail. (unless you retarded the timing to the point the engine would barely run) 87 octane is not the optimum for 10.5 to 1 compression ratio without engine management. It does fine with regular when driven like the hypers do (little or no load), but under acceleration or going up hill, timing retards (out of the optimum setting) to prevent knock. From his last 2 paragraphs, he basically agrees that premium would help performance and milage during load conditions. Soooo---Hypers don't need it....normal drivers may benefit, depending on the environment and how heavy their foot is!