Loss power after gas fill up HELP!

[mad_sb]

Originally Posted by Gords_zenith

Add this to the tank, and fill next time with different station. Done!

http://m.canadiantire.ca/mt/www.cana....jsp?locale=en

Yeah, I have seen that product work wounders on the dyno.. vishnu 335i that dudes wife filled up with 89.. two bottles of that and it was as det free as cars on 93.. i was shocked to say the least

[strat61caster]

Originally Posted by mad_sb

Yeah, I have seen that product work wounders on the dyno.. vishnu 335i that dudes wife filled up with 89.. two bottles of that and it was as det free as cars on 93.. i was shocked to say the least

That's.... that's $30 to cover a tank of gas where if you had bought 93 or 91 in the first place it would have cost an extra what $6 at the absolute most?

Just buy the right fuel to begin with...

[CaptainSlow]

Originally Posted by RandomHero

Not to be a stick in the mud but doesnt each bottle raise the octane by like 0.3? so to go from 87-90 thats 30 bottles? Octane doesnt make power it just prevents knock. Look elsewhere before wasting money on octane booster. Take it to dealer if it gets real bad. But unless its knocking (banging) the octane is fine.

True, but if the engine is seeing knock, it will pull timing, making the car feel much more sluggish. Also keep in mind not all knock is audible...at least not to a driver. If it is, you have serious issues, but knock sensors are really sensitive microphones that can pick up even slight amounts of predetonation. I do agree that octane booster will most likely not do much, though - it doesn't raise octane that much. Also, you shouldn't see that much of a difference between 91 and 93...it'd be different if you were putting in 87 or something.

[naikaidriver]

Originally Posted by CaptainSlow

True, but if the engine is seeing knock, it will pull timing, making the car feel much more sluggish. Also keep in mind not all knock is audible...at least not to a driver. If it is, you have serious issues, but knock sensors are really sensitive microphones that can pick up even slight amounts of predetonation. I do agree that octane booster will most likely not do much, though - it doesn't raise octane that much. Also, you shouldn't see that much of a difference between 91 and 93...it'd be different if you were putting in 87 or something.

Not all areas have 93 available to them as well.

One thing I have noticed is that the 86 is VERY sensitive to bad gas! This happened to me once gassing up at Sam's club. Car ran like complete dog poo after.

I ended up running the tank as dry as I could safely, dumped in some 108 Octane booster and filled up from my nearby, dependable Shell 93. Car was running normally by the end of that tank and has been fine since.

Scott

[eightysixer]

Just to add to the discussion...

I've had my 2013 a few weeks, 32,000km, have had 2 tanks of chevron 94 (I'm in canada), no problems.

I just filled up with shell 91 and I'm here doing searches for 'low power' and finding this thread. I did fill it up all the way to top (maybe too much?), and prior to filling up, I think I was starting to literally run out of gas (car felt funny, noticed I was at the absolute empty line).

So either....

it didn't like me filling it up too high.
it didn't like me letting it get so empty.
it doesn't like the 91 shell.

I find it hard to believe that you can't put 91 shell in this car without a noticeable loss in power...

[roddy]

My FR-S runs noticeably better on 94 than Shell 91. I wouldn't say there is a big difference in power, but throttle response is better, and the car seems just a little more eager to pull through the RPMs.

[eightysixer]

This was immediately noticeable (within 5 minutes or so). I thought maybe I hadn't done the 5-sec traction push long enough because I first noticed it making tight right turns in first gear, and it felt similar to when the traction control is on. I mainly notice a lack of torque off idle/low rpms.

[DIF]

Originally Posted by Ad8707

Have you guys experienced getting bad batch of gas before..with either your current or previous cars...

Absolutely! No process is perfect, there is always variance from standards, and other contaminations and environmental effects. After driving for 40 years I expect to get a bad tank of gas now and then.

And I was just thinking... I don't know where you are but where I am we've been having 90° weather. High temperatures can always be a factor in performance. I use to love to run my Harley on cold October nights in upstate state New York. Seemed to have a bunch more horses on those cold nights.