203* Thermostat
Postmaster
Joined: Jul 2006
Posts: 4,993
Likes: 2
From: Bend, OR
Hot oil is breaking down quicker. I am seeing 225-230 almost all the time. The oil cooler is doing its job by keeping it under 230 for the most part. But I am also not seeing ANY benifit what so ever.
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
Does anyone have solid evidence of that? So far, all I have seen is "International designed it that way, Ford redesigned it differently because of a fleet issue" and all that. Nobody has conclusive proof that it improves mileage, power or whatever.
Postmaster
Joined: Jul 2006
Posts: 4,993
Likes: 2
From: Bend, OR
Ford changed it so it would pass emmisions.
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
But yet nobody has reported that it gains mileage over the less efficient one
Postmaster
Joined: Jul 2006
Posts: 4,993
Likes: 2
From: Bend, OR
There are lots of "claims" but I have yet to see anyone have any data showing it...
I bit because the Housing was leaking and I figure, while I am there... But I am really thinking of getting rid of it.
I bit because the Housing was leaking and I figure, while I am there... But I am really thinking of getting rid of it.
Post Fiend
Joined: Feb 2008
Posts: 10,977
Likes: 5
From: Lancaster, Pa.
Thats a very interesting remark, diesel site has a explination of the 203 thermostat on thier web-site. They said the truck runs alot more efficient at hotter temps. As for mileage gains, don't know.
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
If that is true, how do you measure efficiency? I do it via mileage or power gains. Explanations and theories are great but if nobody has been able to substantiate it, what is the worth of the theory?
Postmaster
Joined: Jul 2006
Posts: 4,993
Likes: 2
From: Bend, OR
Again, thats why I bought one. But how do they come to the conclusion that its more efficient?
I am saying that at this point my oil temps have gone up to the point that I dont feel comfortable with it. Now I am running hybrid injectors and push the hell out of the truck but...
My Oil temp sender is in the hottest spot too, on the filter head.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
Post Fiend
Joined: Feb 2008
Posts: 10,977
Likes: 5
From: Lancaster, Pa.
Again, thats why I bought one. But how do they come to the conclusion that its more efficient?
I am saying that at this point my oil temps have gone up to the point that I dont feel comfortable with it. Now I am running hybrid injectors and push the hell out of the truck but...
My Oil temp sender is in the hottest spot too, on the filter head.
I am saying that at this point my oil temps have gone up to the point that I dont feel comfortable with it. Now I am running hybrid injectors and push the hell out of the truck but...
My Oil temp sender is in the hottest spot too, on the filter head.
Post Fiend
Joined: Feb 2002
Posts: 10,600
Likes: 3
From: Carhenge
My summer economy seems to be about the same, but last winter was my first one with the 203 and I definitely got better fuel economy than I ever have before. I'm pretty skeptical of a lot of mods but I think there is something to this one.
Post Fiend
Joined: Jun 2006
Posts: 9,714
Likes: 2
From: White Mnt's,New Hampshire
Cat had us change all the t-stats in our trucks to 210 in the pete's we run..they claim it burns the fuel better..better running, better performance and better MPG.... last summer some guy's here on FTE have said they feel better power when its hot out..they was useing a 195.. they have changed to the 203 now...
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
I wish the vendor would spend the time and a few bucks to run it on a dyno and let us see what is what. Otherwise, this might just become like the supplements they sell. Lots of placebo effects but nobody can be sure what is what.
My ex-gf swore that she couldn't sleep if she took regular coffee. One day, I told her that it was decaf. After she drank it, I said "Oops. It was regular." Well, she couldn't sleep all night so we found other ways to entertain ourselves. Anyway, next morning, I told her "Oh, look at that. I was right all along. It WAS decaf."
My ex-gf swore that she couldn't sleep if she took regular coffee. One day, I told her that it was decaf. After she drank it, I said "Oops. It was regular." Well, she couldn't sleep all night so we found other ways to entertain ourselves. Anyway, next morning, I told her "Oh, look at that. I was right all along. It WAS decaf."
Postmaster
Joined: Jul 2006
Posts: 4,993
Likes: 2
From: Bend, OR
The water temps are staying in the 200-210 range, the oil temps are what are too high IMHO...
Elder User
Joined: Jan 2006
Posts: 649
Likes: 0
From: Charleston SC
What a deal!!
I must have called and heard about the deal of the century at my local dealership.....I called IH and gave them the previously mentioned part number 1817817C1 and she said she had 12 of them at ....get this......24cents each....Well to ease my tiny little mind, I called the local dealership, and he proudly told me they were $6.88 each and he had 2 in stock...I said well it takes 3 to do the job...He said well we would have to special order them cause we only are supposed to carry 2. What a genius!!
Thread
Thread Starter
Forum
Replies
Last Post
Pipelinewelder20
1973 - 1979 F-100 & Larger F-Series Trucks
15
Oct 2, 2014 03:56 PM
Steveo024
1999 - 2003 7.3L Power Stroke Diesel
17
Jul 27, 2014 06:39 PM
PwerStroke99
1999 - 2003 7.3L Power Stroke Diesel
26
Dec 16, 2010 01:50 PM
