s4wood

I am gonna put a tad of 104 octane with my 91 stuff to see what happens. I wish I was good with math...I wanna see what 93 octane would be like. Adding 2.5 gallons of 104 octane to 14 gallons of 91 octane would generate what effective octane level?

katana

93, but your car would have to be empty to hold 16.5 gallons.

NASA racer

<center><img src="http://www.schube.com/images/blend_sm.jpg"></center><p>don't know about 104.

//scottInSoCal

Nasa, I know you've posted it before, what's that url for locating 100 octane in soCal? Thanks

P. Bauer

By the way, thanks for your help yesterday. I double-checked all the connections and they all looked secure. I pushed on them again, and one of them locked into place. It's weird, just a fraction of a millimeter makes the difference between a connection on this damn car. It seems to be running much better.

Vag-Tool is on the way too...

Thanks again Steve S.<ul><li><a href="https://forums.audiworld.com/s4/msgs/513153.phtml">Damn 91 Octane</a></li></ul>

SlimS4

Make sure you check the Racing Gas box.<ul><li><a href="http://www.76.com/cgi-bin/b2cpt01/scripts/mapQuery.jsp?BV_SessionID=@@@@0394382811.100284247 1@@@@&BV_EngineID=ccciadcdfgmiehgcfimcemndhhgdgjg. 0&Site=76&Nav=locator&Cat=locator">Station Locator</a></li></ul>

George @ BostonAudi

to get 100+ octane around here.

John CC

It would be = [ 104 oct X 2.5 gal + 91 oct X 14 gal ] / ( 2.5 gal + 14 gal ) = 92.97 oct

S4@last!::Now B7 RS4

Has anyone tried it? The only reason I ask, is because I live in Colorado and the closest 100 octane location to me is 120 miles away. Any ideas?

SlimS4

If I had to choose between having 94 octane, and having 91 octane and 100 octane available, I would take the 94 octane. Less expensive in the long run, plus you don't have to worry about mixing them together. Also, the only place around me that has 100 octane is 30 miles away. Not worth the trip to me.