Accidentally filled the tank with 87 octane gas - now what?

[BuddyLee]

Originally Posted by PeteD

Or maybe they do get it and realize that in the end, they do the same thing. They knock the computer down into the fuel map for the lower octane to prevent knock and so on......They are both "sensprs" and will do the same thing. Tell the computer what it needs to know to put it in the lower fuel map which then has to be manually reset

Is the manual reset that you refer to accomplished by removing and then reinstalling the f5 and f20 fuse sequence?

[ZMEnow]

Originally Posted by PeteD

Or maybe they do get it and realize that in the end, they do the same thing. They knock the computer down into the fuel map for the lower octane to prevent knock and so on......They are both "sensprs" and will do the same thing. Tell the computer what it needs to know to put it in the lower fuel map which then has to be manually reset

If you reset the map and start without draining the tank what was the point, the MAP learns real-time, and over time will adjust right back to 93 if that's what you are putting in.

[lbls1]

It should be fine, run the car on the hwy to burn all or most of the gas out. In the future be very careful about the octane of your gas. I always look to see if I use premium because its easy to forget and put the wrong gas in.

[Kevlar382]

Originally Posted by Juiced1

Toss some 100 octane in it to mix it back to 93. You can drive it fine, these cars have a low octane map with less timing. I wouldn't beat on it until you ran another tank through it.

The only 100 octane that I know of has lead in it. You don't want to run load in it. It will plug up your CCs.

[BLU DUCE]

It's easy to make that mistake. Especially when you have 5 vehicles to drive. I did this just once to the camaro. My problem is I can't remember which side the fill tank is on the vehicle i'm driving.

[LevonH]

Originally Posted by BLU DUCE

My problem is I can't remember which side the fill tank is on the vehicle i'm driving.

Maybe you are teasing but ALL gas gauges show which side has the filler. The little pump hose or an arrow on the fill side reveals the hidden filler.

Look at the right side of the fuel gauge here:

https://www.camaro5.com/forums/attac...1&d=1454604613

[gtstorey]

Originally Posted by LevonH

Maybe you are teasing but ALL gas gauges show which side has the filler. The little pump hose or an arrow on the fill side reveals the hidden filler.

Look at the right side of the fuel gauge here:

https://www.camaro5.com/forums/attac...1&d=1454604613

Well not all gauges have it, depends on the age of the vehicle. Depend on how old you are, that is a fairly recent addition.

[LevonH]

Agreed. Was just referring to later model (post mid 80's) vehicles.

[gtstorey]

There were still a lot of cars that didn't have them until about 2000. My 99 s10 doesn't have one.

[LevonH]

Hmmm. My neighbor has a 99. It has the little fuel pump logo in the gauge on the right side.

[gtstorey]

I know we are highjacking a thread, but I'm bored enough today to research this a little. The arrow first showed up maybe in 76 on some Mercedes with the low fuel light being an arrow that pointed to the correct side of the fuel filler. It might have been a coincidence. Ford started with the arrow it in the late 80's. Some companies may have used the fuel pump logo to show which side it's on, but since it has a 50% chance of being wrong/right it's hard to say which ones did it on purpose without reading owners manuals.

My S10 has the fuel filler in the left side.

[ZED SLED]

Originally Posted by gtstorey

I know we are highjacking a thread, but I'm bored enough today to research this a little. The arrow first showed up maybe in 76 on some Mercedes with the low fuel light being an arrow that pointed to the correct side of the fuel filler. It might have been a coincidence. Ford started with the arrow it in the late 80's. Some companies may have used the fuel pump logo to show which side it's on, but since it has a 50% chance of being wrong/right it's hard to say which ones did it on purpose without reading owners manuals.

My S10 has the fuel filler in the left side.

Yeah, but Ford also came with handprints on the decklid for 'Push from here'

[LevonH]

Originally Posted by LevonH

Hmmm. My neighbor has a 99. It has the little fuel pump logo in the gauge on the right side.

Neighbour corrected himself. It is on the left and the gauge has the fuel pump logo on the left. He was standing at the front when he said right side.

Agree to not hijack this any more.