Gas mistake - Subaru WRX Forum
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post #1 of 21 Old 09-21-2013, 09:06 AM Thread Starter
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Gas mistake

I did an idiotic thing this morning. While filling up this morning at chevron, I accidentally pressed 87 instead of 92. I didn't even noticed I pushed the wrong grade until about 90% full. I stopped the take and filled the rest with 92.

Am I going to ruin the engine if I continue driving with 87 gas in the tank? Should I empty the tank or get some sort of additive to boost the octane up?

I'm such a noob. Hope my wrx can survive.


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post #2 of 21 Old 09-21-2013, 09:10 AM
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I did an idiotic thing this morning. While filling up this morning at chevron, I accidentally pressed 87 instead of 92. I didn't even noticed I pushed the wrong grade until about 90% full. I stopped the take and filled the rest with 92.

Am I going to ruin the engine if I continue driving with 87 gas in the tank? Should I empty the tank or get some sort of additive to boost the octane up?

I'm such a noob. Hope my wrx can survive.


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If you've filled up, I'd add an octane enhancer and avoid driving hard until it's in the tank.

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post #3 of 21 Old 09-21-2013, 09:14 AM Thread Starter
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What octane enhancer do you recommend? I checked online and this Lucas Octane Boost sounds promising.


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post #4 of 21 Old 09-21-2013, 09:33 AM
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I'm a fan of STP products, if that helps at all. I've done something similar and just stayed out if boost for the whole tank and was fine.


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post #5 of 21 Old 09-21-2013, 10:24 AM
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It wont ruin your motor. Stay outta boost until you get the fuel out


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post #6 of 21 Old 09-21-2013, 10:38 AM
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I did the same thing...once. Drive your next 300ish miles like a grandma. Having to do that will guarantee that you will never make that mistake again.

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post #7 of 21 Old 09-21-2013, 03:06 PM
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Drive it as you normally would. Don't worry the ECU will handle the difference....Okay for the record the was sarcasm just so you know...

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post #8 of 21 Old 09-21-2013, 04:38 PM
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I've done it and had zero problems, just don't make it a habit.

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post #9 of 21 Old 09-21-2013, 06:38 PM
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Quote:
Originally Posted by sleepr View Post
I did the same thing...once. Drive your next 300ish miles like a grandma. Having to do that will guarantee that you will never make that mistake again.
Bet the gas mileage rocked though hahahaha
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post #10 of 21 Old 09-21-2013, 06:40 PM
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I'm a fan of STP products, if that helps at all. I've done something similar and just stayed out if boost for the whole tank and was fine.


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Then you're throwing money away. 90% of octane boosters, including STP, won't raise the overall octane of your gas but a fraction of a point. Very few octane boosters actually do anything.

Stay completely out of boost and you'll be fine. Drive it till it's running on fumes.
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post #11 of 21 Old 09-21-2013, 10:13 PM Thread Starter
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I wish my wrx came with a boost gauge like the ford focus ST or something. Can't be bothered to install an aftermarket gauge.

But yah, I've been driving like my Lola (grandma in Filipino) for the past couple hours. It's not a good feeling. Certainly learned my lesson after this.

On the bright side, at least I saved $10 of gas! Hahah


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post #12 of 21 Old 09-21-2013, 10:29 PM
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You could just get the spt one and install it yourself. Super easy to install. Even comes when instructions. Pretty much plug and play. No splicing writes just plugging and unplugging pigtails.

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post #13 of 21 Old 09-22-2013, 12:31 PM
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^ I may do this temporarily since it's plug and play..
Good call man
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post #14 of 21 Old 09-22-2013, 12:41 PM
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Thanks. I have one for now until I decide to get a different one. I was surprised at how monkey proof they made it to install, fol.
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post #15 of 21 Old 09-22-2013, 07:39 PM Thread Starter
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Where do you buy that? I dont think they sell that gauge in canada
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