203 Degree T-Stat Question
Senior User
Joined: Feb 2004
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Did you read their little write-up on it? The 203 allows the engine to operate more efficiantly at slighty higher temp with no side effects with oil temps. i ordered one with a billet housing, water pump, belt tensioner and serpentine belt. Might as well do everything while I have the pump off for a r/r.
Logistics Pro
Joined: Nov 2002
Posts: 4,788
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From: Mansfield, TX USA
Originally Posted by aklim
Why did say Dieselsite offer this stat? Assuming it works better, why didn't Ford stick with it instead of going with a 195 T-stat? TIA
No, Ford wasn't being stupid. The 7.3 runs just fine with the 195* t-stat. It's just that the 7.3 might run just a tad more efficiently with the 203* t-stat.
Besides, it's a fun Saturday morning project. If your truck is more than 3-4 years old, you should probably change out the t-stat anyway.
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Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
Originally Posted by JUMBO_UTE
Did you read their little write-up on it? The 203 allows the engine to operate more efficiantly at slighty higher temp with no side effects with oil temps. i ordered one with a billet housing, water pump, belt tensioner and serpentine belt. Might as well do everything while I have the pump off for a r/r.
Logistics Pro
Joined: Nov 2002
Posts: 4,788
Likes: 20
From: Mansfield, TX USA
Originally Posted by aklim
I did. I was just curious why Ford would go with a T-stat that didn't let the engine run as efficiently when there was a better one.
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Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
All right. You people have forced me to change. Mon I will go to Ford and get the longer hose for the 2 alternator system, get the 203 T-stat and the billet housing. You people won't stop nagging till I get it done, will you? Fine. I give up and will buy it. That is my story to the wife and I am sticking to it. 
