203* T stat?
Tuned
Joined: Oct 2011
Posts: 282
Likes: 0
I must have gotten a defective one then, thanks.
Well at least my write up shows a comparison side by side of the 2 units. It shows that you need to check these before you actually put them in your vehicle. I wonder if the people reporting high oil temps also had a bad unit?
Well at least my write up shows a comparison side by side of the 2 units. It shows that you need to check these before you actually put them in your vehicle. I wonder if the people reporting high oil temps also had a bad unit?
Hotshot
Joined: Dec 2005
Posts: 10,256
Likes: 7,694
From: Chino Valley, Arizona
I ran the 203 in my '97 but it failed shut in less than 1 year, I had about 2 mpg gain with it (hand calculated every fill up) and smoother idle. but when it failed I couldn't see spending the money to replace it and went back with a ford thermostat.
Elder User
Joined: Dec 2010
Posts: 704
Likes: 1
haha wow someone actualy close to amarillo texas 
not back to subject i bought A/OX4's 203* awhile back and still aint put it on but if i rember once i do il post up my milege but if it stays the way it has been (bouncin all over the past this past year) who knows what my numbers will be
not back to subject i bought A/OX4's 203* awhile back and still aint put it on but if i rember once i do il post up my milege but if it stays the way it has been (bouncin all over the past this past year) who knows what my numbers will be
Thread Starter
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Cargo Master
Joined: Jan 2009
Posts: 2,800
Likes: 31
From: OKC, OK
haha wow someone actualy close to amarillo texas
not back to subject i bought A/OX4's 203* awhile back and still aint put it on but if i rember once i do il post up my milege but if it stays the way it has been (bouncin all over the past this past year) who knows what my numbers will be
not back to subject i bought A/OX4's 203* awhile back and still aint put it on but if i rember once i do il post up my milege but if it stays the way it has been (bouncin all over the past this past year) who knows what my numbers will be
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
With the 203*, I am currrently seeing EOT's in the 180's and barely 190's, right now (mid 80's ambient). Most I've seen, this year, was 207* (peaked at this temp) after a long steady run on the interstate and then slowing down. I do have mods that help lower EGTs which, in turn, help lower engine temps. I'll have to see what the hot Texas summer brings. I put the 203* back in last summer to regain some lost mpgs when I changed to the stock stat for a couple yrs. The 203* has netted me up to 10% better mileage and EOT's haven't increased all that much. Like I've said before, "My truck likes it."
Thread Starter
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Cargo Master
Joined: Jan 2009
Posts: 2,800
Likes: 31
From: OKC, OK
With the 203*, I am currrently seeing EOT's in the 180's and barely 190's, right now (mid 80's ambient). Most I've seen, this year, was 207* (peaked at this temp) after a long steady run on the interstate and then slowing down. I do have mods that help lower EGTs which, in turn, help lower engine temps. I'll have to see what the hot Texas summer brings. I put the 203* back in last summer to regain some lost mpgs when I changed to the stock stat for a couple yrs. The 203* has netted me up to 10% better mileage and EOT's haven't increased all that much. Like I've said before, "My truck likes it."
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
Could be. I do know that my truck performs better when engine temps are warmer and the air is cooler.
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Cargo Master
Joined: Jan 2001
Posts: 2,726
Likes: 5
From: Slatington, PA
I've also had both. No difference at all.
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
A bone stock truck can easily see these oil temps. It has EVERYTHING to do with the driving style, ambient temps, altitude (which makes a gigantic difference), and oil type.
High altitude driving can easily net 230-250 degree oil temps on a completely stock truck that is in perfect health. I have datalogged countless trucks, and this is an extremely common occurrence that I see on a regular basis.
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