Knock/detonation after Attendant filled truck up with low octane after BB Tune was done...

[Ballaholyk84]

Hows it going everyone?

So about a month or so ago I had the Black Bear Tune done to my truck (97 Tahoe LT 4x4). I have always ran 92 octane in it so its what I stuck with. Always seems to run much better for me. I had the tune done for 92 Octane specific as thats all I put into it. Well this evening, I go to get it filled up where I normally go, tell the kid "Fill up Premium" as I always do, he takes my card, gives it back and begins pumping. After the "Click" goes off, I always look back and see the total cost as well as how much went in. I noticed that he just filled my truck up with 89 Octane Regular Unleaded! I get on his case about it for a minute but didnt want to cause a huge scene so I take off. Well after about 5 miles I start to notice a loud sound that sounds like Detonation! Happens when I give it the gas under load but stops after I am cruising. If I am going up a slight incline it can be heard the best when cruising. Give it some gas to get it to drop a gear and right before it does you get that nasty clicking/ticking/baseball card in spokes almost sound.

I assume this is happening because of the low octane fuel that he put in the truck? Its never happened before and its too much of a coincidence for it to happen after he ****** up.

Would a bottle of octane booster be wise or a waste of money? Not sure what I should do but I do knopw that I am not driving the vehicle until I figure out my options.

Believe me I was furious when I looked back and saw that. Never has that happened in almost 7 years of fueling my vehicles up here in Oregon.

 

[#1taho]

I would try a octain boost just to see if it works. I never use any of the additves but would be curious to see if it works.

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[iamdub]

If it were me, I'd disconnect the fuel line at the filter and run the pump to dump the fuel into the 5-gallon jugs I use for my lawn equipment. Or at the very least, I'd pour a few bottles of octane booster in it. I can't say for sure what brands of octane booster are legit, but I'm sure an internet search would be enlightening.

 

[mizzouguy]

I vote octane boost. One of the name brands like lucas or something, not the cheap stuff. I've seen it work in boats and hot rods to help reduce pinging.