
We got the transmission temp up to 226 check this out. Oh all, right this thing on yeah, it’s on. Okay, yeah see the truck back there all right. So here I got something cool for you guys today. This is actually a pretty cool thing.
It’S in a secret package right here now, if you guys are an OG follower of the channel, are you you might have known that I, like commercially hauled in the gas field for the past, like seventy five thousand miles on that truck, I’m in western Pennsylvania. We have the Marcellus Shale region here in the oil field and the gas field, it’s just kind of crazy. So I use my truck right here. This 2017 f250 power stroke as a hotshot truck. Yes, I know it’s a platinum.
What are you doing working with a truck at the end of the day? The truck needs to be worked, but now the truck is starting its second phase of life, where it is no longer a work truck and is now becoming more of a show, truck a cleaner truck. Something like that, but we’re still gon na use it. So I don’t really know what it is, but it’s on a second stage of life, so anyways. If you guys run these trucks like severe use.
I’M talking like towing, like 30,000 pounds, running it with big ugly wide wheels like that, and you know kind of just driving like you’re a pissed-off teenager. Then you will probably be seeing slightly higher fluid temperatures such as oil coolant and transmission fluid, and that all has to do with the factory thermostat opening in between 194 and 201. Now that’s a pretty high range of temperature for that thermostat to be opening. So mad scientist Dan was down in the lab and whipped up something to solve that problem, and what we’re doing today is we’re testing it to see if it actually makes a difference. Oh I I figured you guys probably want to see it huh.
Oh, it’s a box inside another box. Oh look, there’s a mint! Thank you! Alright! So here it is guys SP, six, seven power, stroke, low, temp, high flow thermostat.
I don’t know if I told you guys it was a thermostat. Yet I just told you: it was a solution. It’S a thermostat! It’S a low temp high flow thermostat more paper here it is another bag. This thing is packaged.
I, don’t know about you, guys, that’s pretty fine. Looking thermostat and look! It comes with nice picture directions. Now, there’s only four steps to this, so hopefully it’s pretty easy.
Oh any DUI wires out there do it yourselfers. I can definitely say that good directions helped tremendously on installing really anything yet alright guys. So we’ll talk about the actual specs here of the thermostat like temperature-wise in a second. But what we’re gon na do is we’re not gon na. Do like hypothetical here saying numbers we’re gon na get the trailer we’re gon na pull with the truck before and after that, the easy links will data log all of our temperatures, the trailers empty right now I guess we could have took the boat, but the boats Not as heavy as the trailer with probably a car in it, so we got to put a car now, alright guys with the trailer hooked up, here’s what we’re looking at on temp wise!

Okay. Now this is from me driving the truck to the garage. Now this is just average driving just cruising around the engine. Oil temp has already cooled down just a little bit, so we have engine coolant, temp engine coolant, temp 2, which is the secondary system to your primary system, secondary system engine oil temp down here and then transmission temp. Here I have throttle position, set up their exhaust manifold pressure and then boost pressure, GPS, so ignore the ones on the side we’re only looking at the four right in the middle now technically, according to the factory thermostat, that sucker isn’t even open right now at a Coolant temp of 179, it doesn’t open until in-between, which will then increase your engine, oil temp, your in your transmission temp.
So what we’re after here is some solid data running the factory thermostat, while hauling all right, so we made it over to the garage and that’s what you can see kind of what we are left with under you know empty trailer. That is just like an eight-and-a-half by 20 box trailer on the truck I tried to like get in and a little more in like making this severe situation, but I really couldn’t get the transmission Tempah buff, like 209 210 coolant temp stayed around 195 to 200. Ish same with the engine, oil temp right around like 204 205 206 somewhere in that ballpark, so there’s the empty towing numbers and I’m sure those will be very similar to just empty driving as driving the truck. You know on a little a little more of an aggressive manner, but we made it to the garage morals over there behind the tree, probably. Alright.

What question should we put the Supra or Merle in the trailer? What’S heavier 5-cylinder turbo diesel, 1984 or 2020 sucrose, no glut flux, just going straight for sure the glove plugged. It alright final time and then I’m giving up done alright. So I made it back to my place really quick. We are grabbing rusty, red we’re gon na try to put the rest of red in the trailer.
I never put them in the trailer before so. Let’S see if it fits while talking, you think we already broken alright guys. She is in probably smidge over weight on the trailer here, but we’re gon na make it work all right guys. I’Ve been driving for approximately like 15 minutes, with rusty red in the trailer going behind and I’m going back roads and, let’s, let’s press play and you’re back roads were up down around. You can really do.
But this is a pretty steep grade. Actually, like 3 % grade, it seems steeper that it is put it that way. So I haven’t seen the temperature get above. 219 219. Was this what’s the highest?
I seen it for the transmission. Now I’m gon na make a right here, and this is a nice long uphill which should give us should give us some good data. I can definitely feel that the trailers back there definitely it’s bouncing around – definitely probably a smidge overweight with trucking there. But you see my floral position. cruising up this hill all right to be made it to the top.
So you can see that we crept up to about 221 engine oil, temp and transmission temp coolant temp did rise, 212 primary or secondary system 122, so we definitely have a temp spike coming up that hill. So that was pretty. You know that was pretty. We were moving pretty good, all right, guys, we’re not even halfway back yet and I’m just casually driving and we got the transmission temp up to 226 as soon as it went into 225 and went into red. So I guess that means we’re getting into red zone.
On the temperature for the transmission, so right now we’re holding about 225 ish on the transmission, so this is actually great data. We’Re really going to be able to see if the spe thermostat is going to bring that temp down into into the cool zone enough safe operating range, but yeah there we go 3:25 on the transmission temp and we are at 221 on the engine. Oil temp still hovering around 206 on engine coolant temp for the primary and secondary we are at 100. I will keep you guys, updated. Alright, guys we just pulled back in at the garage.
Trailer is still on. We hit one red light and it dropped us from like 222 we were holding on the transmission temp. It dropped us down to like 216 bumped it back up to like 218 and it’s been it’s been like steadily decreasing since I’ve just been parked and I literally just put the truck in park. So engine oil temp is a 210 transmission, temp 217, but we were holding it like 222. Secondary coolant is at 111 and primary is at oh.
It was it like 205, so that driving right there was pretty aggressive. So we seen a spike up to like 226 transmission temp, so we’ve been driving in total for about 45 minutes yeah. The max we’ve seen was at 226 average was at 222 before the transmission temp. There. You go, that’s a pretty hard data test.
I rode this truck commercially through the hills of West Virginia up and down mountains, and there’s definitely definitely on long uphill. I wouldn’t doubt you seeing 240 transmission temp and for like the weight towing, the trailer is roughly like 3,200 pounds empty and then the truck the single cab, Chevy 1500 I’d say: that’s probably like what like 50 100, I just had a quick google search. There’S kind of numbers all around there. I took the average so we’re roughly like 80 300 pounds, towing, which I would say is pretty average for the normal guy. Obviously, if you have a big camper, if you’re running commercial, you’re gon na be running a lot, heavier than 80 300 pounds check, rescue van make sure you still still alive and that worked, God hasn’t even budge all right.
I’M gon na let the truck cool down a little bit. I am going to drop the trailer we’re gon na pull this sucker in there and we’re gon na swap in that thermostat and what I’m gon na do we get that swapped, I’m gon na run the exact same route about a 45-minute back road trip. There’S some good hills or some good down hills or some good up hills. A lot of shifting is going on. We got tight turns so we’re gon na do that same exact route when we get the thermostat swapped in and we’re gon na see how much the transmission temp drop.

So basically you just don’t want it to get above 225. Obviously, because that’s when it starts to get into the red zone, so as long as we keep the transmission temp under 225, keep the oil temp a little lower too 22s little high drop that down a little bit. If it can do that, man we’re in good shape, but all right, I’ll see you in there in the garage. I graduate there all right so the trucks in the shop it was like smokin hot, let it cool down a little bit. I just kind of got started draining the coolant is, is really self-explanatory.
There’S just a little while a little drain valve thing on the bottom corner of the rad pretty self-explanatory. So I drained the colon. I probably actually drank too much because correct me. If I’m wrong, you just have to get it lower than what you’re working on. So I probably Jane, like I, don’t know a little over 3/4 gallons out of there, and then I pulled this tube off here.
This is your upper coolant line here. This is what you got to pull off now. This is very self-explanatory. You just pull this safety. Clint pin back and it’ll sit in its rear position and then this pops right off its Quick Connect.
So now you have your flange on there. This black piece right here now, I think it’s just three bolts – that top will come off and you will have access to the factory thermostat. So you see the dual thermostat in there. So that’s the factory one and then we have our aftermarket one right here and then there’s a vent hole. So the vent hole has to be facing towards the valley of the engine.

But I’ll confirm that when I pull out that factory one but anyways real quick. So I have the battery terminal disconnected. I have everything disconnected on the side, because I’m doing a little weight reduction here so that exhaust flange that crossover tube flange down in the bottom now with six seven powers show. This is the like Achilles heel. When you’re doing this kind of a weight reduction job, those bolts down in that flinch, the one on the bottom, you can see down there, the bolts they heat up and they expand and they get cool when they heat and they expand it’s just over and over And over and over again that comes directly off of the exhaust manifold, so over time they get brittle and whenever you go to pull this crossover pipe here, these bolts snap off inside the exhaust manifold.
If anyone has ever done, this kind of weight reduction, you’ll know exactly what I’m talking about for me. I’M gon na knock on some wood here, because I have never had one of these break on me and I’ve done a ton of these now. This is just my weird voodoo way of doing it. I put the socket on, I don’t even know where the socket is. I use an extension with the pivot end bottom, I’m so I put this on.
I set this on top of the bolt and then I tap the upper end of the extension with a hammer or with the ratchet itself just lightly, just tap the tap to tap it, and then I go with the ratchet by hand really slow backing it off. I do that on this one I go a little bit, get it free and then I go to the next one. Do the same thing put it on to the bolt tap this upper end of the extension with with the ratchet go by hand, really slow, really slow, and I work it a little by little each way and I’ve never had one of these breaks now I don’t Know, if that’s completely irrelevant to the situation, that’s how I do it. I read one break but check this out. So this is your intake part here.
So this is the exhaust gases after well. Almost no. This is the part where the exhaust gases come out of the EGR cooler they get cold in here they cross over. Here they go into your intake manifold, thus into the engine as fresh air. So this is the intake for look at that.
This is going into the fresh air part of the engine, you’re telling me that the engine is going to perform well when this is what it’s working with for clean air being sucked in that doesn’t make too much sense, all right! So check this out. I just hope the trailer still at the shop trailer is a lie. We are on so here’s our starting temperatures.
It’S still a little warm whenever I did the whole cycle with you know heating it up getting the coolant like perch through so we’re starting an engine coolant, temp 156 and an oil temp 152 transmission at 147 and per our secondary coolant system 82. I swapped this one to engine rpm, so you can see where the RPM is. We have boost pressure over here and throttle position up there. According to the SP website. This should open at 175 in between 175 and 180.
Oh, it was a little thicker than coolant. Obviously so the oil temperature will be slightly higher because oil does have to be at a certain temperature before it will really do what it’s supposed to do. So, let’s go alright guys. We’Ve been going for almost 10 minutes. We left at 6:35.
It is now 644. So nine minute ride on the back roads, we’re about to hit 200 on trans temp. We have one engine coolant temp at 179 engine oil temp 192, which is good. That’S all attempt there secondary coolant system 86, and then we have our transmission at 198 ish. It was about to hit 200 now that I’m kind of cruising on no Hills it dropped back down to like 197, all right.
Let’S get a time check, seven o’clock. So what’s at 15 minutes so 15 minutes in we’re still cruising a cool 183 on coolant. Temp 192 engine oil, temp 197, still on the transmission. So it seems like that’s like the middle of the road for just average cruising, but on the way to that road, where we hit 226 last time with the stock one, we have to go up to Hills. Now their gradual hills, but they’re long, so we are on the climb of the first hill now so we’ll get a good look at what our temps will go to now.
I have it in tow hall, just like last time cruising up the hill and alike: a 4 % grade okay, so we just hit 200 try to keep this as fast-paced as I can for you guys, I’m sure, that’s probably boring watching some temperatures, but this is Testing us we’ve got to do all right, so we’re almost to the top for the solid 202 2:03 will let off the gas. Alright, we’ve reached the top all right made it to the second Hill 7:05. Didn’T take that long to get here we’re starting the bottom of this hill at 2:05. Now this Hill is slightly longer than the last hill, so we should see some increase coming up here, we’re still rolling in about a 4 % grade. If the thing on the trucks correct still on toe Hall, 206 transmission, temp, 192 engine coolant, 201 engine oil, so right off the bat, the transmission tip is doing great.
You can see engine rpm on the gauge throttle position and boost pressure. So you just kind of see how much power we’re kind of putting into it now. The main thing I’m watching here is transmission temp, because that’s really what spiked on the last run here all right, so we reached the top the hill we hit 210 rate at the top. So now we’re starting down the other side of the hill and we’re gon na be on the road where we hit 226 last time so yeah look, I already dropping Susy, let off the gas it immediately starts dropping. So the cooling factor of the power strokes works.
Very, very well, I think it was just the main problem was the factory thermostat would open at to late in the game when it was too hot. So I don’t know now we’re going down to 4 % grade. We have Towe Hall on so it’s gon na. Do the downshifting the transmission will be holding us back so that should put some keep some heat in it still holding it about a 2 and 9 there’s a nice downshift, so yeah I just. I just think that the factory one just opened up too late in the game, so by the time it was trying to cool off the transmission and everything you know you were already running it at over 200 degree truck alright guys.
So this is rate where we hit 226 last time check 709 s. We just made it here we’re holding about 216 217. So, let’s see what we can get here, all right so right here we were at like 226 and we are at 217. So that’s like a 9 to 10 degree drop in the transmission temperature and we’re already dropping it’s already wanting to go back down to 16 very impressed. This thermostat will 100 % keep you out of the red zone while towing.
So if you want to save your oil, save your transmission fluid. This is definitely a must, but all right, so we’re gon na keep driving back to the shop and we’re gon na see what we end up with there. But going back there, it’s just standard standard. Reds winter, snow, more hills all right time, check 7:25. We are pulling back in at the garage.
That was exactly like 50 minutes. I was close. I estimated 45 all right, so here’s our ending temperatures as we are pulling in. We are pulling in right now, 726. Ending temperatures are 185 engine coolant, temp 194 engine oil, temp 91 secondary system for the coolant transmission at 200, cranky cranky, all right trucks absolutely hammered with dirt 14 wides rut um.
They said all right, but anyway, so here’s my final overview on the SPE. Thermostat. I 100 % approve this product, i’m not paid by spe, i’m not a ploy ii, i’m not biased, unbiased review. This is a must for your six seven power stroke set it here, mark it down in your calendar. I don’t know why you’d marketing calendar, so I just watched the footage back on the camera.
I got a screen right down the camera, so that’s why I’m looking over there so normally with the factory one and SPE, one you’re going to run in between 16 and 20 degrees lower like at all times so I’ll put the two here. You know this will be the factory one. This will be the SPE one. So here’s the two screenshots of the end result after the 50 minute loop. I did run it up and down those hills, leaving in a toe hall running all around here’s.
The end result getting back to the shop there’s about 20 degree, drop on just overall coolant pen and about in between 16 to 17 drop on engine oil and transmission temperature. So this could be the difference between your truck, like overheating and wearing out your oil and wearing out other things, and it not. So if you drive your truck like a jacked off 16 year old or if you haul or tow or do anything of the sort. This is like legitimate 100 %. You got, you got to do it, so this has me thinking.
I commercially ran in the oil field as a hotshot truck with that truck regularly tongue, 17 14,000 ish pounds, and I was going up and down some mad hills. I definitely burnt the transmission fluid in there. If I was after the results of this video 100 %, I smoked that transmission fluid back. You know in between zero in 75,000 miles, so I should probably service the transmission but yeah guys. We could sit here.
Talk about all the technical data of oil and temperatures and this and that but long story short, this gets you to temperature gets you to proper temperature, quick fast, it gets you there and it keeps you there. It keeps you running cool on your transmission and on your engine temps. So I mean this is a no-brainer that was probably like one of the biggest flaws with the six seven is that the thermostat opens late or opens hi. So then, by the time is trying to cool the engine oil in the transmission, it’s already starting with an over 200 degree situation. So then it can’t bring it down where it needs to be.
So I like to try to remain unbiased with trucks. You know like with diesels, because I literally like them all, but these trucks, man, anyone who has one. You know what I’m talking about. Oh and why, wouldn’t you run a transmission cooler? You say like why?
Wouldn’T you just put that on there and run a cooler transmission with that? Well, three things: that’s a lot more expensive! It’S a lot harder to install and then, in the winter time, when you’re, when that transmission cooler is exposed to the freezing degree weather, your transmission might not get up to temperature, where it needs to be. Oil has to be at a certain tempt to its job. That answers that oh yeah guys, I almost forgot to tell you if you guys want one of these for your truck hit.
The first link in description use discount code at checkout Corrie. Ten you’ll save like ten bucks off the thing. It’S 64, it’s already cheap. 54, bucks are you nuts? Can you hear that there’s unidentified pitter-patter on the ceiling or on the roof?