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I am looking to get some lifespan info on the different Thermostats aka : T-stat.
I got my truck in 2012 with a MC T-stat in it and running cold at the 180º range.
That one was replaced with a new MC that lasted a little over a year. I replaced
the MC with a IH T-stat. It is almost 2 years old now now. Installed Dec of 2013.
Don't know if this is relevant or not but it almost seemed that the T-stat would start
it's decline after a winter in the system. My current IH has done 2 winters and
holding at 192º~202ºF. I will have to see how it does next spring to really say
one way or the other for sure.
So lets here you Y-stat lifespan times and the temp it failed at.
BTW I tend to drive about 24,000 miles a year. So if you have an idea on
the number of miles post that info also please. I'll get my old box out and
see if I put the install date and miles on that and if I did I'll post that info.
Bought my truck in JUNE 2013, it had a new t-stat of 2 months when I purchased. Replaced this spring with a 200* Mishi. when temps hit 184 consistently... makes it about two years, I drive 23k a year.
Got my truck in June of 2012. Not sure if or when the t stat was ever replaced. Did a coolant flush and new MC stat. Started seeing temps drop down 186-182 consistently after winter of 12.
Did oil cooler and studs in June of 13 along with another MC stat. Started seeing temps again drop down in the mid to low 180's around Nov last year. Replaced with 200 stat.
I drive 25-30K a year.
On note, during this camping season I switched out the 200 degree stat for a new MC they swapped out for my old one that didn't last a year. I keep it in the truck. I'm going to stick with it this up coming camping season next year to see what temps I run. I tow a 8K TT when fully loaded.
Bought my truck in feb 2013 with 112k...was running at about 155* all the time. Put a new motorcraft t stat in shortly after and I'm at 167k miles now and it usually stays at 184*
Bought my truck in feb 2013 with 112k...was running at about 155* all the time. Put a new motorcraft t stat in shortly after and I'm at 167k miles now and it usually stays at 184*
I think the minimum temp is 188 for our trucks can run right?
closed loop operation and open loop operation? Someone help me out here? There are preset computer settings till the engine gets to operating temperature. For the 6.0 I believe it's 186-188 degrees. I think you need to change your stat again. Your truck is just getting warmed up?
Seems the T stats from international are holding up better than the ones from ford?
Factory t-stat stayed in until 90k, was running 186-188* in the winter and 190s in the summer. Put the Mishi in because I wanted to, paired with a new standard fan clutch.
The OEM in mine lasted until October 2012. The Motorcraft lasted until November of 2014 when I switched to the Mishimoto stat. Which has been rock steady.
I think the minimum temp is 188 for our trucks can run right?
closed loop operation and open loop operation? Someone help me out here? There are preset computer settings till the engine gets to operating temperature. For the 6.0 I believe it's 186-188 degrees. I think you need to change your stat again. Your truck is just getting warmed up?
Seems the T stats from international are holding up better than the ones from ford?
yep sorry forgot to include that it is indeed failing and needs to be replaced again soon. was barely hitting 188* this summer, saw it hit 200+ a few times towing but empty never went over 188. with cold weather coming im sure itll drop even more
When changed from the production line part to Motorcraft, has anyone done a very detailed look at the part to tell if the Motorcraft replacement is the exact same part? Typically Ford will "aftermarket" the Motorcraft line while you have to ask the parts counter to look up the exact "blue box" part to get what is supplied OE.
I'm just wondering if there is some variance in lifespan that is being asked for in this survey related to sourcing. In my own vehicles and the hundreds we had in our vehicle test fleet we rarely ever had issues with OE T/S. My own replacements have only been because "while I'm there".
When changed from the production line part to Motorcraft, has anyone done a very detailed look at the part to tell if the Motorcraft replacement is the exact same part? Typically Ford will "aftermarket" the Motorcraft line while you have to ask the parts counter to look up the exact "blue box" part to get what is supplied OE.
I'm just wondering if there is some variance in lifespan that is being asked for in this survey related to sourcing. In my own vehicles and the hundreds we had in our vehicle test fleet we rarely ever had issues with OE T/S. My own replacements have only been because "while I'm there".
I would reckon the OEM stat has higher quality internal wax versus Motorcraft or aftermarket.
Same as the OEM batteries which last forever, replacements barely 3 years.
The choice of materials and quality in the thermostat probably also extends to the diaphragm and seal components too. Hardening of the diaphragm or leakage with both would alter the performance and life. So I think a close inspection between the OE and Motorcraft should be addressed in this lifespan thread to make sure we're comparing apples.
When changed from the production line part to Motorcraft, has anyone done a very detailed look at the part to tell if the Motorcraft replacement is the exact same part? Typically Ford will "aftermarket" the Motorcraft line while you have to ask the parts counter to look up the exact "blue box" part to get what is supplied OE.
I'm just wondering if there is some variance in lifespan that is being asked for in this survey related to sourcing. In my own vehicles and the hundreds we had in our vehicle test fleet we rarely ever had issues with OE T/S. My own replacements have only been because "while I'm there".
Originally Posted by Bullitt390
I would reckon the OEM stat has higher quality internal wax versus Motorcraft or aftermarket.
Same as the OEM batteries which last forever, replacements barely 3 years.
Josh
Originally Posted by TooManyToys.
Agree with both comments.
The choice of materials and quality in the thermostat probably also extends to the diaphragm and seal components too. Hardening of the diaphragm or leakage with both would alter the performance and life. So I think a close inspection between the OE and Motorcraft should be addressed in this lifespan thread to make sure we're comparing apples.
Some very good points.
Just like buying brake pads. You get the over the counter stuff from the parts guy or the better ones that he have to "get"
that seem to be so much better.
When I got the T-star from IH they dod have to order it do to being out of stock.
Truck needs to be above 185 to operate efficiently or it just keeps feeding it fuel attempting to warm it up.
I run a 200° Mishi all year long. Summer here in VA is 95-106° this summer, towed an 8k trailer, 4 wheeler in the bed, one on a trailer and a boat. ..... not all together. But I towed all summer without a single issue. My temps are 202 unloaded, 204-206 towing rock steady. I saw 217° with the trailer on a 6% grade near 8 miles long and hit the top at 70mph, oil was 225°. With a truck load in the bed, probably 11k total. As long as the Mishi stays that way, it won't come out and with lifetime warranty, i won't go back to MC.
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