Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - Reply to Topic
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum > Ford Focus Third Generation > DURATEC Ti-VCT Performance (2012-Current) > anyone using premium gas ?

DURATEC Ti-VCT Performance (2012-Current) The place to chat about any Duratec 2.0L Ti-VCT engine performance, tuning and exhaust related upgrades.

Search This Forum | Image Search | Advanced Search    
FocusFest

Thread: anyone using premium gas ? Reply to Thread
Title:
  
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
What I Drive
Year, color, and model of your car. Example: 2003 Pitch Black ZX3
Name
Your real name.
City
State
Country
Insurance
Please select your insurance company (Optional)

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
Yesterday 11:19 PM
Slicknick I ran 87 when I was strapped for cash, the reason I bought the focus, but now I paid the car off. The car ran just, well...okay. I never thought I would be running 93 in this car but after I got a few mods and a tune I had to try it. Premium will cost me an extra $250 a year and it is worth it for me.

If you plan to keep the car for awhile, which I do, I would get a 93 tune. Car runs spectacular!
Yesterday 05:44 PM
DJTrollin I was using 87 but was getting a slight staggered pinging noise when I opened the car up. Switched to 93 and the sound has went away. Currently intake, headers, Tom's tune and exhaust.

Sent from my MotoG3 using FF Mobile
Yesterday 05:26 PM
Jburks you have 300k miles on your car?!
Yesterday 04:17 PM
coldbear
((( 89 )))

I use 89 octane in my 2013 SE. It takes a couple tanks for the computer to get use to the higher spirits. Best money one can throw at the FF beside full synthetic. 300,000 miles, she's hummin' right along ....!
12-30-2016 04:45 PM
Lash LaRue

It is not "snake oil" as you call it. You appear to be ignorant of the engineering that went into the Ti-VCT engine...

Ti-VCT stands for, "Twin, independent Variable Cam Timing". There are two overhead cams that operate the valvetrain in your car. There are, additionally, two knock sensors per cylinder that are designed to automagically (via oil pressure solenoid) adjust engine timing depending on the knock-index of fuel that you put into your car.

If you put in el-cheapo fuel, the engine will retard its own timing to prevent pre-ignition and knock (i.e. it will not destroy itself). So, to be clear, it WILL run just fine on 87 octane. BUT if you give it a higher octane, the engine will automatically advance timing to give you a slight performance gain. Whether that's worth the marginal increase in cost is completely open for debate, but the engineering that went into your engine is not debatable; it simply is what it is:

My own experiences are that premium fuel results in a modest, incremental performance gain. I have a 5-sp manual, and with premium I can generally keep my RPM's much lower without having to downshift. This means I can also pull hills in top gear that don't otherwise require me to downshift or lug the engine. This does result in some additional fuel economy (I have had a CDL for years, work in logistics, and happen to be a subject matter expert in this area).

As an aside, over the lifespan of your engine, lugging === bad. If you're able to prevent that with a higher grade of fuel (as I am able to do), you will probably get a few more miles out of it, so there may be indirect benefits there as well.


Quote:
Originally Posted by Tigeo View Post
This is verging on snake oil folks. Premium is still ~$0.40 or more than regular here in VA at Top-Tier stations – less delta at the discount vendors like grocery stores. I believe that most of the difference people notice is placebo (butt dyno and ticking noises). I also think that there is *some* improvement but it’s not as drastic as “I filled up with premium for the first time and got 5 more mpg!” – B.S. These cars are designed to run on regular. Premium is simply more octane which allows higher combustion pressure to be tolerated before detonation. Yes, I realize our little cars have high-combustion ratio motors but they have been designed to run with regular. I used to only run regular as I was driving ~30K/year (mainly highway) and the $0.40/gal over ~1000 gallons of gas annually adds up. $400 is a lot of money for what was zero added benefit. Now I only drive my car ~5K/year (if that) and its mainly city. I am at less than 200 gallons annually so now talking $80 extra a year to run premium. I do notice (could be placebo) that during the summer, in town, with the A/C on, that it seems to take off easier with premium and that is the only advantage I have felt.
12-15-2016 01:31 PM
cavedog309 88584 miles all Premium and most Non Ethanol .60$ more but this Little car will just shi* and Git throu the Twisties, Still Amazing while delivering 33 to 38 mpg. Here in the Northeast they put what they call oxygneators in the gas for the cold weather , You can see the fuel mileage dipp in the winter and oh about april march it will go back to 37 , 38 MPG.
12-15-2016 11:03 AM
Tigeo Still seeing large (to me) delta in premium - regular cost here in VA. ~$0.60 or more here.
12-12-2016 08:27 PM
sailor
Quote:
Originally Posted by Blackfocus86 View Post
Last time I tried this was with my 96 civic automatic. Conclusion was 87 octane was pretty consistent at 33.8 miles. With 91 it was 31.6 if I remember. Less mpg in the premium here in Cali using the same chevron station and pump for the most part
This makes perfect sense for older designs that don't have adjustment capability to take advantage of higher octane, or the compression to do so.

Better for years to use the fuel that it's designed to work with, no options on that once you find the one that works best (usually the recommended one).

These are different, so it's a real personal choice and dependent on local prices. Prices to determine if MPG saves $, and preference for the performance or not. Running better isn't worth a nickel to some, $ per mile is all that matters.
12-12-2016 07:11 PM
RonMaiden Cars are inconsistent on the same octane,same driving so it is hard to say one way or another. A lot of the reason people run high octane is some what in their mind and simply can't put lower octane in their cars. I think I'm a little in that group with the Focus in part since the ECU will accomodate the higher octane but is the difference in perfromance a reality or just a placebo effect. I do get what seems like another 20 miles a tank with premium but cost-wise I think I'm spending a few more dollars a tank but doesn't bother me.

The 15.8 MotorTrend ran in the 2012 Focus SE (5 speed) was accomplished on 89 octane and is a very good time for a showroom stock MK3. Is running 91-93 really going to make a real world difference. A tune will be able to take advantage of extra octane but I'd be curious what a tuned bone stock Focus would run in the 1/4 vs untuned.

How much does a tune and higher octane effect a DCT equipped Focus with no other mods since they struggle to see the 15s in stock trim.
12-12-2016 09:54 AM
Blackfocus86 Last time I tried this was with my 96 civic automatic. Conclusion was 87 octane was pretty consistent at 33.8 miles. With 91 it was 31.6 if I remember. Less mpg in the premium here in Cali using the same chevron station and pump for the most part
This thread has more than 10 replies. Click here to review the whole thread.

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -5. The time now is 07:34 AM.


Copyright 2002-2015 FocusFanatics.com. All Rights Reserved : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Mazda CX-3, Audi S3, Mazda MX-5 Miata and Acura TLX. You can find all Ford Focus, Focus ST and Focus RS related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. If you own other makes have a look at Challenger Hellcat Forum, Charger Hellcat Forum, Cadillac ATS-V Forum, Cadillac CTS-V Forum, Lexus RC-F Forum, Lexus GS-F Forum, Mercedes GLA Forum, Mercedes GLE Forum and Volvo XC90 Forum.




 

Search Engine Optimization by vBSEO 3.6.1