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General Discussion
203 degree thermostat for powerstroke
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<blockquote data-quote="ChopTop84" data-source="post: 1506421" data-attributes="member: 19210"><p>I have one of the original 203 t-stats when they were first being made to fit the unique ford waterpump, and that said, I dont think I would do it again.</p><p></p><p>Here is my reasoning...</p><p></p><p>As much as a diesel likes to be hot, the powerstroke fuel system uses engine oil under high pressure to operate the injectors. Depending on the age of the engine, the clearances have opened up and the high pressure oil pump is getting tired, and HOT OIL flows right thru the system too easily.</p><p></p><p>My truck's HPOP was weak, and at full temp, it was a gutless, smoky dog. But as long as the engine oil was cold, she was a rockstar! I've since replaced the HPOP with a modified terminator, and now it runs good hot or cold, but still runs slightly better cold.</p><p></p><p>Me personally, I would stick with the 196 from FoMoCo. We've had bad luck with aftermarket glowplugs, so wouldnt surprise me if the t-stats were the same way.</p><p></p><p>Since you've got a 96, you probably have green coolant with the SCA additive. That SCA additive makes sand and tears up water pump seals. Get a coolant filter setup on there to pull the sand out. Probably too late to save your current water pump, but might extend its life a little. Assuming you've been checking your SCA additive level ever other oil change that is...</p></blockquote><p></p>
[QUOTE="ChopTop84, post: 1506421, member: 19210"] I have one of the original 203 t-stats when they were first being made to fit the unique ford waterpump, and that said, I dont think I would do it again. Here is my reasoning... As much as a diesel likes to be hot, the powerstroke fuel system uses engine oil under high pressure to operate the injectors. Depending on the age of the engine, the clearances have opened up and the high pressure oil pump is getting tired, and HOT OIL flows right thru the system too easily. My truck's HPOP was weak, and at full temp, it was a gutless, smoky dog. But as long as the engine oil was cold, she was a rockstar! I've since replaced the HPOP with a modified terminator, and now it runs good hot or cold, but still runs slightly better cold. Me personally, I would stick with the 196 from FoMoCo. We've had bad luck with aftermarket glowplugs, so wouldnt surprise me if the t-stats were the same way. Since you've got a 96, you probably have green coolant with the SCA additive. That SCA additive makes sand and tears up water pump seals. Get a coolant filter setup on there to pull the sand out. Probably too late to save your current water pump, but might extend its life a little. Assuming you've been checking your SCA additive level ever other oil change that is... [/QUOTE]
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203 degree thermostat for powerstroke
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