203 Degree Thermostat - Ford Powerstroke Diesel Forum

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 37 Old 03-02-2007, 11:27 AM Thread Starter
Compression Ignition Addict
 
cblackb's Avatar
 
Join Date: Jun 2006
Location: Columbus, OH
Posts: 459
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
203 Degree Thermostat

Hello All, what is the deal with better fuel mileage by running a hotter thermostat? I've heard of people saying they are getting better mileage by running this hotter thermostat...any downfalls to this? Thanks!

2000 F-250 XLT PSD Auto Super Cab SB 4x4
Magnaflow 4" straight-piped into duals
Eclipse Sport Trucks Body and Interior Conversion
Tinted Glass
Zoodad Mod
Diablosport Chip (don't know HP)
Foil Delete Mod
DIY/6637 Intake Mod
Oilguard Bypass Oil Filtration System
CCV Mod
HPX Mod
Mag-Hytec Everything
BTS Valve Body
Cobra 29 LTD CB Radio
IAH Delete
cblackb is offline  
post #2 of 37 Old 03-02-2007, 11:41 AM
Compression Ignition Addict
 
fire370's Avatar
 
Join Date: Dec 2006
Location: Clearwater, KS
Posts: 260
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
fire370 is offline  
post #3 of 37 Old 08-10-2009, 07:43 PM
Powerstroke.org Rookie
 
mikemikemiker's Avatar
 
Join Date: Aug 2009
Location: Poulsbo
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
A hotter thermostat means a hotter engine, I don't know about better fuel mileage with a hotter engine, however with a cooler engine you will get more power out of it
mikemikemiker is offline  
post #4 of 37 Old 08-11-2009, 05:33 AM
Powerstroke Junkie


 
NCHornet's Avatar
 
Join Date: Aug 2006
Location: Mayberry, NC
Posts: 8,308
Thanks: 0
Thanked 51 Times in 11 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
PLACEBO!!!! Can't see how 8 degrees is going to make a Hill o Beans of difference. YMMV!!!

NCH

NCH
Proud Father of USAF Airman


2000 F350 DRW,CC,LB, 4X4, Western Hauler Pkg.
Ford AIS/ BTM, FTVB
My CCV MOD, Coolant filter
06 Grill, 05 lights,6.0 trans cooler
Cyro/Hawks, JVC Touchscreen HU, JL C5's, Infinity 800watt amp,
DP tunes, 60 tow/80 e/120 race, on a SCT2 tuner
P3 controller, Brite Box Turbo Lifesaver
KMC Wheels x 4

http://s132.photobucket.com/user/NCH...=recent&page=1

Friends Don't Let Friends Drive Trucks With Generic Tunes
NCHornet is offline  
post #5 of 37 Old 08-11-2009, 05:48 AM
I am that hot

 
superxcrewfx4's Avatar
 
Join Date: Sep 2008
Location: Flemington NJ
Posts: 1,762
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Send a message via AIM to superxcrewfx4 Send a message via Yahoo to superxcrewfx4
I just changed the upper hose and put in a regular thermostat from napa, I dont see how the 203 degree one can make that much of a difference.

1999.5 Ford F-250 Powerstroke
7.3 Powerstroke Diesel
4" Turbo Back MBRP with 6" Tip Straight Piped!
DIY Intake
Isspro Gauges
Diesel Site Coolant Filter
TW 6 Position Chip
2.5 Inch Leveling Kit
305/75/16 Mickey Thompson MTZ's
239k and COUNTING!!!

superxcrewfx4 is offline  
post #6 of 37 Old 08-11-2009, 08:06 AM
Compression Ignition Addict
 
layson's Avatar
 
Join Date: Sep 2007
Posts: 3,653
Thanks: 34
Thanked 58 Times in 56 Posts
Mentioned: 4 Post(s)
Quoted: 48 Post(s)
Feedback Score: 0 reviews
I wouldn't run it. Just means your oil temps are going to be higher... run a stock thermostat.

2001 - 14" OUO 525 - 38x15.5x20 Toyo & 20x12 Weld Cheyenne's. Hybrids, 38R, BTS, Spearco, Terminators..



Quote of the Day:
Quote:
Originally Posted by Mannysouza View Post
You will get some axle wrap with a heavy trailer, I can feel it when towing my gooseneck with some heavy equipment. My Deavers will wrap enough to make the tires rub the front of the rear fender well if I give it too much throttle on aceleration.
layson is offline  
post #7 of 37 Old 03-22-2010, 09:18 PM
Powerstroke.org Rookie
 
Join Date: Feb 2010
Location: Jacksonville
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
I have installed a oil xover line and a 203 thermostat and my stock truck runs quieter, smoother and idles 100% better. The powerstroke has a very efficient cooling system. Mine has never overheated or even got close pulling a 12000 lbs 5th wheel. I don't know about other experiences but as for me it works very well. I can hardly tell its a diesel running down the highway. All I hear is the whistle of the turbo. The stock thermo from International is a 203 its a short stem though so its unusable in my 97. If its the factory one for International I figure its OK for my 7.3. Just my opinion.

Stan

1997 F250HD EXT CAB
Banks Stinger
PacBrake
stanlyonjr is offline  
post #8 of 37 Old 03-23-2010, 02:08 PM
Guest
 
Join Date: Oct 2007
Location: pittsboro, Indiana
Posts: 2,773
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 1 reviews
Quote:
Originally Posted by stanlyonjr View Post
I have installed a oil xover line and a 203 thermostat and my stock truck runs quieter, smoother and idles 100% better. The powerstroke has a very efficient cooling system. Mine has never overheated or even got close pulling a 12000 lbs 5th wheel. I don't know about other experiences but as for me it works very well. I can hardly tell its a diesel running down the highway. All I hear is the whistle of the turbo. The stock thermo from International is a 203 its a short stem though so its unusable in my 97. If its the factory one for International I figure its OK for my 7.3. Just my opinion.
I agree with you, makes sense to me.

Plust i heard the new thermostats only run at about 175 degrees
xxxxxxxSTROKE_THIS_F-250 is offline  
post #9 of 37 Old 03-23-2010, 02:46 PM
Powerstroke.org Rookie
 
Join Date: Feb 2010
Location: Jacksonville
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
What interesting is my temp gauge on the factory gauge cluster now has the temp needle right square in the middle of the "normal" range. Almost like the gauge was calibrated for the 203 thermostat. I have driven it up long 6 degree grades without any temp problems. Actually driving on flat highway the temp goes down a little. I can't make any comments of fuel economy. I need to run a few tanks before I can comment.

Stan

1997 F250HD EXT CAB
Banks Stinger
PacBrake
stanlyonjr is offline  
post #10 of 37 Old 03-23-2010, 03:58 PM
Guest
 
Join Date: Oct 2007
Location: pittsboro, Indiana
Posts: 2,773
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 1 reviews
let, me know i have one sitting in the garage, just havent installed it yet
xxxxxxxSTROKE_THIS_F-250 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel 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:
OR

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.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome