Ford Ranger Forum - Forums for Ford Ranger enthusiasts!

Go Back   Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > >
Forgot Password? Join Us!

Welcome to Ford Ranger Forum

Reply
 
Thread Tools Search this Thread

  #1  
Old 10-28-2013, 06:02 PM
fishing_5 fishing_5 is offline
Like the Forums
 
Join Date: Sep 2013
Posts: 36
Default Gas Octane Rating questions?

So I have a 2003 Ranger XLT with a 4.0L engine. 112K Miles. I've been recently having bad fuel mileage. Perhaps I was going against the wind, but just haven't noticed the bad mileage until now. I was at my local NAPA and I know the guy that works there. He told me I should be using the 87 octane or better. That should increase it or help it a little. I was using 85 octance, which I told him I was using the 85 the lowest in my area, cus I'm cheap lol.
So in your opion whats the best octance rating fuel type to use in my 4.0L ranger? What do you use?
Reply With Quote
  #2  
Old 10-28-2013, 06:03 PM
djfllmn djfllmn is offline
ford dealer parts guy
 
Join Date: Apr 2011
Posts: 20,770
Send a message via AIM to djfllmn
Default Re: Gas Octane Rating questions?

87 no more no less
__________________
2016 F150 Supercrew XLT 5.0
1968 Ford Thunderbird Tudor 429 Thunderjet V8

(Click for Project Log)

traded-2007 F150 XLT Supercab 5.4
Sold:03 Sonic Blue FX4 Steppie 4.0SOHC 5spd
ranger free since 6/15/2012

Quote:
Originally Posted by Logan03CO View Post
These threads make me feel better about myself....
Quote:
Originally Posted by guell View Post
Welcome to the internet, if this is your first visit to it I suggest you stock up on a lot of preparation h cause you gonna be butt hurt a lot
Reply With Quote
  #3  
Old 10-28-2013, 06:03 PM
bigfisher bigfisher is online now
Mustang Owner
 
Join Date: Mar 2012
Posts: 14,051
Default

I run 87

Sent from my iPhone 5 so I can tell you to search wherever I may be
__________________
2017 Lightning Blue Mustang GT PP
SR X-pipe | Roush Axleback
2013 F150 FX4 5.0 - Sold
1998 Jeep Wrangler TJ 4.0 5spd - Sold
2001 Mustang Bullitt - Sold
2005 Level II - Sold
2001 Integra GSR - Sold
1999 XLT - May 2013 TOTM - Totaled

Quote:
Originally Posted by 2004 fx4 level II
fuckin Nissan shhhiitttttttttt!!!!!!!!!!!!!!!!!!
Reply With Quote
  #4  
Old 10-28-2013, 06:09 PM
fishing_5 fishing_5 is offline
Like the Forums
 
Join Date: Sep 2013
Posts: 36
Default Re: Gas Octane Rating questions?

Quote:
Originally Posted by djfllmn View Post
87 no more no less
So is it possible to harm the engine if you use 85 or even the 91 octane? If so what would be the symptoms?
Reply With Quote
  #5  
Old 10-28-2013, 06:11 PM
JerZDevil81 JerZDevil81 is offline
loves beer!
 
Join Date: Mar 2013
Posts: 380
Default Re: Gas Octane Rating questions?

87 and Seafoam it.

----------

To high of an octane could create a ping from pre-detonation. Too low of an octane will cause ignition issues and will probably cause exactly what youre having a problem with, bad gas mileage.
Reply With Quote
  #6  
Old 10-28-2013, 06:13 PM
fishing_5 fishing_5 is offline
Like the Forums
 
Join Date: Sep 2013
Posts: 36
Default Re: Gas Octane Rating questions?

Quote:
Originally Posted by JerZDevil81 View Post
87 and Seafoam it.

----------

To high of an octane could create a ping from pre-detonation. Too low of an octane will cause ignition issues and will probably cause exactly what youre having a problem with, bad gas mileage.

So I will start using 87 octane, but why seafoam?
Reply With Quote
  #7  
Old 10-28-2013, 06:15 PM
JerZDevil81 JerZDevil81 is offline
loves beer!
 
Join Date: Mar 2013
Posts: 380
Default Re: Gas Octane Rating questions?

Clean out the injectors as well as any crud you got in the tank by using a low octane, cheaper gas.
Reply With Quote
  #8  
Old 10-28-2013, 06:19 PM
fishing_5 fishing_5 is offline
Like the Forums
 
Join Date: Sep 2013
Posts: 36
Default Re: Gas Octane Rating questions?

Quote:
Originally Posted by JerZDevil81 View Post
Clean out the injectors as well as any crud you got in the tank by using a low octane, cheaper gas.
use a whole bottle or just some or what?
Reply With Quote
  #9  
Old 10-28-2013, 06:20 PM
JerZDevil81 JerZDevil81 is offline
loves beer!
 
Join Date: Mar 2013
Posts: 380
Default Re: Gas Octane Rating questions?

If you dont want to go through Seafoaming it, I would at least get a bottle of Techron to throw in your next tank.

----------

If you seafoam, 1/3 goes into Brake Booster vacuum line, 1/3 in gas tank, and 1/3 in engine oil. Change oil after 200-300 miles if you put it in crankcase.
Reply With Quote
  #10  
Old 10-28-2013, 06:20 PM
Jaws Ranger Jaws Ranger is offline
Ford Ranger Driver
 
Join Date: May 2012
Posts: 4,528
Default

I got some 91 today I get it every now and then ford4thot is my bf
__________________
96 Ford Ranger 2.3 - Loads of mods
03 DSG Mustang GT 5 spd- CAI, Flowmaster cat back, Sequential tail lights, 70mm T.B. 265/305
Reply With Quote
  #11  
Old 10-28-2013, 06:23 PM
JerZDevil81 JerZDevil81 is offline
loves beer!
 
Join Date: Mar 2013
Posts: 380
Default Re: Gas Octane Rating questions?

Yea instead of throwing 91 in there I put in a bottle of Techron every oil change. I dont seem to have any MPG issues.
Reply With Quote
  #12  
Old 10-28-2013, 06:24 PM
fishing_5 fishing_5 is offline
Like the Forums
 
Join Date: Sep 2013
Posts: 36
Default Re: Gas Octane Rating questions?

Quote:
Originally Posted by JerZDevil81 View Post
If you dont want to go through Seafoaming it, I would at least get a bottle of Techron to throw in your next tank.

----------

If you seafoam, 1/3 goes into Brake Booster vacuum line, 1/3 in gas tank, and 1/3 in engine oil. Change oil after 200-300 miles if you put it in crankcase.
never heard of putting seafoam in the oil, or in the brake booster.
Reply With Quote
  #13  
Old 10-28-2013, 06:34 PM
copenranger copenranger is offline
Ford Rangers
 
Join Date: Mar 2013
Posts: 209
Default

Quote:
Originally Posted by fishing_5 View Post
never heard of putting seafoam in the oil, or in the brake booster.
Your not putting it in the brake booster, its the vacuum line that goes to the brake booster.
__________________
2005 ranger XLT Reg Cab Long Bed 2.3L, 235/75/15

kenwood ddx-719 DVD receiver, 360 watt JL audio amp, 2 kicker comp 8's, kenwood 750 watt 4 channel amp, 4 kenwood 6x8's.
Reply With Quote
  #14  
Old 10-28-2013, 06:36 PM
Jaws Ranger Jaws Ranger is offline
Ford Ranger Driver
 
Join Date: May 2012
Posts: 4,528
Default

I did that awhile ago... No white smoke

ford4thot is my bf
__________________
96 Ford Ranger 2.3 - Loads of mods
03 DSG Mustang GT 5 spd- CAI, Flowmaster cat back, Sequential tail lights, 70mm T.B. 265/305
Reply With Quote
  #15  
Old 10-28-2013, 06:38 PM
fishing_5 fishing_5 is offline
Like the Forums
 
Join Date: Sep 2013
Posts: 36
Default Re: Gas Octane Rating questions?

well what the whole part about seafoam in the oil? Never heard of it.
Reply With Quote
Reply

Tags
fuel, gas, mileage, octane

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Gas Mileage Questions Mettelor General Ford Ranger Discussion 13 03-01-2012 09:34 PM
E Load Rating? stevebutt16 Wheels and Tires 0 09-06-2011 11:50 AM
Preferred Gas Station and Octane? Blacked Out FX4 General Ford Ranger Discussion 73 06-07-2011 01:15 PM
Gasoline/Octane Questions ranger4.0 4.0 SOHC / 4.0 OHV Tech 26 02-05-2011 09:34 PM
Rating the Ranger mr.ranger General Ford Ranger Discussion 12 08-10-2009 01:37 PM