View Poll Results: Turning water into wine, and 87 into 91

Just drive and don't worry about it.

70.00%

Slowly add premium as tank space becomes available.

28.00%

Add octane booster from parts store.

2.00%

Add 100 octane race gas.

Voters: 50. You may not vote on this poll

What should I do?

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Apr 2, 2018 | 11:17 AM

#21

DGXR

Melting Slicks

Joined: May 2013

Posts: 2,692

Likes: 349

From: Sacramento California

Search "premium recommended" vs "premium required"...

https://www.google.com/search?q=corv...hrome&ie=UTF-8

Apr 2, 2018 | 02:02 PM

#22

MyOtherCar

Melting Slicks

Joined: Dec 2004

Posts: 2,943

Likes: 14

From: Gurley (Keel Mtn, Sweet Home) Alabama

Quote:

Originally Posted by MyOtherCar

here, 92 reads Premium Recommended
96 reads Premium Fuel Only.

Go figure..... I've used 87 octane in both over the years. Vehicles did not turn to dust or melt or develop catastrophic engine failure.

As otherwise mentioned, engine computer will compensate

sorry, didn't mean to imply that I strictly used 87 octane over the years and relied on the engine computer to adjust timing. Such is not the case.

rather, at times over the years I found I filled with 87, or GF did, whatever. Point is, car ran just fine and as long as I wasn't on Talladega's track, the car performed just fine.

The link above about premium vs regular only takes one back to all the CF discussions on the subject

Apr 3, 2018 | 02:33 PM

#23

scrappy76

Drifting

Joined: Jan 2011

Posts: 1,853

Likes: 81

From: Hamilton Virginia

I fill my 94 vette with regular all the time. Whenever I have about 50 cents per gallon savings with my giant food grocery card I fill up with premium. To be honest, I really do not notice a difference between the two daily driving it.

Now my 89 carbreted chevy s10 with a 2.8 v6, I do notice when I go from a tank of regular to a tank of premium.
Also my 76 vette with a carbureted big block seems to like the premium.

Apr 3, 2018 | 03:01 PM

#24

aklim

Team Owner

Joined: Jul 2004

Posts: 28,469

Likes: 3,288

From: Hartford WI

Quote:

Originally Posted by scrappy76

My car has not been stock for a long time so take it FWIW. Last time I checked fuel from the same source between low, mid grade and premium, my datalog did show substantial difference in knock count under acceleration. I don't see the difference in performance but my KS does. I run the tank to almost empty when I did the test as usual so there isn't too much influence from old fuel.