110 leaded

[lee]

Originally posted by civic_slayer
thanks for the responses guys. The only reason i asked is that most say that a little, and i mean LITTLE, diesel fuel actually helps clean out the cars innerworkings. May just be a myth. Thanks anyways.

Myth.

Diesel in gasoline: It's a less refined fuel with more soot, etc. Not likely to clean. More likely is it would clog fuel injectors. If you have the cash, just buy a can of Techron. A pint of toluene with a full tank every couple of months gets the job done cheaper - get a year + supply (gallon) of it at Ace Hardware for like $15.

Diesel in oil: It would wash down the cylinder walls by diluting the oil - accelerating cylinder wall & piston ring wear - not a good idea. Buy something like Auto-Rx (http://www.auto-rx.com)

Diesel in transmission: (Shuddering thoughts) again try Auto-Rx (http://www.auto-rx.net)

BTW, I work for Uncle Sam, not Auto-Rx...I've just seen many testimonials at the oil forum - probably time to list this site again - cruise it for fuel/oil/ATF questions and other product info. (http://theoildrop.server101.com/cgi/ultimatebb.cgi)

[Chris]

Originally posted by civic_slayer
just a little Q. In idaho you can get 110 octane trick racing fuel from the pumps. I read that the minimum an SVX should use in 91 octane. Is it kosher to run one gallon of trick in a full tank of 91 or 93 octane?
I did just a squirt some time ago, not more than .082 of a gallon. and it didn't seem to hurt the car. There wasn't that much race fuel in the tank but it seemed like it actually did help somewhat.
let me know if it is cool to mix 91 and trick race gas.

The fuel you are referring to I am assuming is at the Stinker station on Overland here in Boise. To be quite honest, here is the ups and downs.

First off this is a leaded fuel. It will destroy your catalytic converters (all three) as well as cause premature failure of your O2 sensors.

Next, yes you will see a performance gain by running a higher-octane fuel. But let me add that this difference is only seen in the numbers and really is not a perceivable “feel.” I made test passes at the track with years of time slips to compare to running on different fuels. The code in the SVX computer that control ignition timing is adaptive (to a point) and will occasionally advance the timing under the right circumstances to “test” the fuel. It will slowly advance it until it hears fuel knock and then cut it back until it stops. If ant any time if hears knock again, it will reset its timer/counter and knock the timing back again until fuel knock is gone. To see or make changes faster, put in higher-octane fuel, drive for a bit to get it cycled into the fuel rails, then stop the car and disconnect the battery for a while. When you re-connect it, drive it like you stole it in order to get the maximum effect from both the ECU and the TCU. They adapt to your driving patterns. Again, keep in mind the difference in the ¼ mile or light-to-light will be nearly unperceivable. Top speed and wide-open throttle will show substantial improvements. Keep in mind factors of altitude, and air density. Someone at sea-level will get a greater gain than someone in Denver.

If you really want to play with this idea with safe operation, use VP Performance Unleaded (R+M/2: =101 octane) or VP Motorsport 103 (R+M/2: =103 octane). Both are unleaded, wont harm emissions systems or O2 sensors, and they both are street legal.

There is so much more I need to put in here, but my time is limited now. Will add more soon.

[HighwayUFO]

thanks for the earfull Chris. just wanted to put some myth and fact together. I don't plan on ever running and higher octane fuel ever again, even though i did it once. so Chris, how about that coffee. i do live in caldwell

well, im not sure how an n/a car reacts to higher octane fuel, but a friend of mine actually gained 21rwhp on the dyno by switching from 93 to 116 octane fuel in his 94 Supra TT (with only basic mods, intake exhaust, apexi safc, etc), and i ran a full .2 sec and 2 mph quicker in my 89 supe turbo by running 116 (note, 60' times were exactly the same both runs, which were 3 minutes apart)