Coolant temp too low with a 170 t-stat? - Page 3

Coolant temp too low with a 170 t-stat?

This is a discussion on Coolant temp too low with a 170 t-stat? within the F150 Ecoboost Problems forums, part of the F150 Ecoboost Forum category; Originally Posted by mwemaxxowner how sure are you that it is just dexcool? I ask because I have been told that this is not the ...

Page 3 of 4 FirstFirst 1234 LastLast
Results 21 to 30 of 34
Like Tree8Likes

Thread: Coolant temp too low with a 170 t-stat?

  1. #21
    Rookie metroplex's Avatar

    Join Date
    Feb 2016
    Location
    SE MI
    Posts
    12
    Member #
    15060
    Liked
    2 times
    Quote Originally Posted by mwemaxxowner View Post
    how sure are you that it is just dexcool? I ask because I have been told that this is not the case.

    Sent from my Moto G (4) using Tapatalk
    https://www.fordparts.com/Products/C...-Coolants.aspx

    Ford Motorcraft Orange meets WSS-M97B44-D as well as GMW 3420 / GM 6277M and ASTM D3306.
    Prestone Antifreeze/Coolant - Choose your region | Prestone®
    Prestone Dex-Cool meets GM 6277M.
    Seems like they are the same based on those specs, and they are both OAT anti-freezes.

  2. #22
    Eco-Beast mwemaxxowner's Avatar

    Join Date
    Mar 2016
    Posts
    4,153
    Member #
    15410
    Liked
    1251 times
    Yes, I've read this, but I've concluded that it's "mostly similar", but not exactly the same. I'd like to find, definitively, that it is compatible. I have also found that not all "dexcool" labeled coolants are the same.

    Whatever we choose must be silicate free.

    I cannot find, definitively, whether our motors are 100% compatible with the 2-eha additive.

    Sent from my Moto G (4) using Tapatalk

  3. #23
    Rookie metroplex's Avatar

    Join Date
    Feb 2016
    Location
    SE MI
    Posts
    12
    Member #
    15060
    Liked
    2 times
    I got home and looked at my bottles of Prestone Dex-Cool. They meet the Ford WSS-M97B44-D spec as well as the GM spec, so the Prestone Dex-Cool is the same as the Ford Specialty Orange. You could say Mobil 1 5W-30 is "similar" to Ford Motorcraft 5W-30 in that both meet the same specifications, but are you so AR that you absolutely must use Motorcraft 5W-30?

    It also specifically states it is silicate and phosphate free. I've been using Prestone Dex-Cool in my 2014 SHO as well as my 2009 Cobalt SS Turbo.

    Quote Originally Posted by mwemaxxowner View Post
    Yes, I've read this, but I've concluded that it's "mostly similar", but not exactly the same. I'd like to find, definitively, that it is compatible. I have also found that not all "dexcool" labeled coolants are the same.

    Whatever we choose must be silicate free.

    I cannot find, definitively, whether our motors are 100% compatible with the 2-eha additive.

    Sent from my Moto G (4) using Tapatalk
    mwemaxxowner likes this.

  4. #24
    Eco-Beast mwemaxxowner's Avatar

    Join Date
    Mar 2016
    Posts
    4,153
    Member #
    15410
    Liked
    1251 times
    Sounds good enough if it's silicate free.

    Sent from my Moto G (4) using Tapatalk

  5. #25
    Gold Supporting Member rbrown's Avatar
    Gold Member

    Join Date
    Aug 2014
    Location
    NJ
    Posts
    4,160
    Member #
    6210
    Liked
    1710 times
    I've run a dexcool non motorcraft coolant plenty of times with no problems. You guys won't notice any difference or issues. Especially if topping off


    Sent from my iPhone using Tapatalk

  6. #26
    Ecoboost Sr Member psrumors's Avatar

    Join Date
    Nov 2016
    Location
    Cartersville, GA
    Posts
    54
    Member #
    24601
    Liked
    9 times
    Quote Originally Posted by metroplex View Post
    I got home and looked at my bottles of Prestone Dex-Cool. They meet the Ford WSS-M97B44-D spec as well as the GM spec, so the Prestone Dex-Cool is the same as the Ford Specialty Orange. You could say Mobil 1 5W-30 is "similar" to Ford Motorcraft 5W-30 in that both meet the same specifications, but are you so AR that you absolutely must use Motorcraft 5W-30?

    It also specifically states it is silicate and phosphate free. I've been using Prestone Dex-Cool in my 2014 SHO as well as my 2009 Cobalt SS Turbo.
    The real question is, would you mix Mobil and Motorcraft?

    I don't mix brands

  7. #27
    Rookie metroplex's Avatar

    Join Date
    Feb 2016
    Location
    SE MI
    Posts
    12
    Member #
    15060
    Liked
    2 times
    Yes, absolutely. I mix brands all the time, ATF, engine oil, coolant, brake fluid, gear oil, etc... as long as they meet the same spec.


    Quote Originally Posted by psrumors View Post
    The real question is, would you mix Mobil and Motorcraft?

    I don't mix brands

  8. #28
    Ecoboost Regular BadAV's Avatar

    Join Date
    Mar 2016
    Location
    St. Louis, MO area
    Posts
    168
    Member #
    15347
    Liked
    55 times
    Quote Originally Posted by cdat81986 View Post
    I called Reische back today, and am having one of the new prototype T-stats shipped out to me free of charge. Joel told me that it's built exactly like the oem and is better than what's being produced currently. It's so new that he didn't have any gaskets for them yet, but it's the same at the oem gasket which I still have and it's still in good shape so I'm sure it will be ok.

    He asked me to provide any feedback to him as soon as I can so I will report back here and to him as soon as I get it installed.
    So I know this is an old thread but since info has been posted recently, I wanted to add my 2 cent's worth regarding the OP's original issue. Nobody posted what I suspect was his issue, based on the description - he had air in the system from changing out the thermostat so he needed to "burp" the coolant system. Coolant temperature varying as described is a dead giveaway for air in the system, especially since it occurred right after changing the thermostat out.
    Daily driver: 2012 4LT Centennial Grand Sport Corvette convertible, Vitesse throttle controller, tweaked timing tables & tranny tables

    Gone after 14 years but never forgotten: 2002 Z71 Chevy Avalanche, heavily modded to 475 hp. Magnacharged, cammed, stalled, tuned w/HP Tuners. It was a blast to drive!

    Replaced by 2015 F150 FX4 Supercrew Lariat Blue Flame metallic, 3.5 Ecoboost

  9. #29
    Ecoboost Regular BAD454SS's Avatar

    Join Date
    Dec 2015
    Location
    HELL Arizona
    Posts
    212
    Member #
    14381
    Liked
    65 times
    Name:  IMG_20160619_144316.jpg
Views: 20
Size:  143.6 KBName:  IMG_20160619_161649.png
Views: 19
Size:  99.0 KBName:  IMG_20160619_144334.jpg
Views: 21
Size:  131.6 KB

    My 170 does this also. When decelerating off interstate temps will drop to high 170s as well as A/F goes very lean when off the gas , basically your not putting any heat into the engine. You have massive airflow through radiator very little heat generated. Last summer when it was 120deg here driving at 75mph on interstate . Temps were staying at 187 , IAT 1 was at 130 and IAT2 was at 140. I had some E85 mixed in showing negative knock counts at part throttle. The thermostat sets the floor of your coolant temp . You would have to goto a bigger radiator to see temps close to 170 all of the time. Ford sized the radiator and cooling system pretty good . My fans turn on at 205 when idle . With this Thermostat my average water temp is 185 normal driving , no matter what outside temp is. My thermostats been installed a year and 6 months . Ford optimised the cooling system ,water flow ,air flow ,to a 195 deg thermostat . I would say its normal for temps to act this way with a 170 stat. The guage on your dash is deadband from 180 to 230 meaning needle stays in same spot as long as coolant is in that range, when you decel off interstate coolant goes below 180 and you see the needle drop a tad . I like to keep coolant temps as far away from boiling as i can out in the desert.
    Last edited by BAD454SS; 01-12-2017 at 06:57 AM.
    2014 FX4 Tremor,Fullrace DP, Wagner,BBK,Banks CAI, itv22 Plugs,170 thrmostat ,Unleashed 91 tune.
    2010 Raptor ,6.2L, 2.9 Whipple 650 hp kit .MODS everything
    2002 Lightning ,3.4 whipple ,800 RWHP, MODS everything
    1993 454 SS ,502 ci and 2.4 kennebell, 600 rwhp MODS everything
    1979 10th annivesary trans am 400 4spd , 56,000 orig miles, Stock
    1963 Impala 21,000 orig miles
    2015 POLARIS Scrambler 1000,Stock
    1995 BANSHEE ,Not Stock
    1985 Yamaha RZ500 ,4 cylinder2 stroke,12,000 miles , Australia

  10. #30
    Ecoboost Regular BadAV's Avatar

    Join Date
    Mar 2016
    Location
    St. Louis, MO area
    Posts
    168
    Member #
    15347
    Liked
    55 times
    Quote Originally Posted by BAD454SS View Post
    Name:  IMG_20160619_144316.jpg
Views: 20
Size:  143.6 KBName:  IMG_20160619_161649.png
Views: 19
Size:  99.0 KBName:  IMG_20160619_144334.jpg
Views: 21
Size:  131.6 KB

    My 170 does this also. When decelerating off interstate temps will drop to high 170s as well as A/F goes very lean when off the gas , basically your not putting any heat into the engine. You have massive airflow through radiator very little heat generated. Last summer when it was 120deg here driving at 75mph on interstate . Temps were staying at 187 , IAT 1 was at 130 and IAT2 was at 140. I had some E85 mixed in showing negative knock counts at part throttle. The thermostat sets the floor of your coolant temp . You would have to goto a bigger radiator to see temps close to 170 all of the time. Ford sized the radiator and cooling system pretty good . My fans turn on at 205 when idle . With this Thermostat my average water temp is 185 normal driving , no matter what outside temp is. My thermostats been installed a year and 6 months . Ford optimised the cooling system ,water flow ,air flow ,to a 195 deg thermostat . I would say its normal for temps to act this way with a 170 stat. The guage on your dash is deadband from 180 to 230 meaning needle stays in same spot as long as coolant is in that range, when you decel off interstate coolant goes below 180 and you see the needle drop a tad . I like to keep coolant temps as far away from boiling as i can out in the desert.
    Good info! I agree with your premise in the desert. I had a 160* thermostat in my Avalanche and the biggest issue with it was that it took forever to get really hot air blowing on heat in the winter. I had also added Flex-A-Lite 282 e-fans so I was able to tailor my fan-on speed. The truck ran 175* when running down the highway. As soon as you stopped, temperatures started coming up. I had the fan set to come on at 195*. I never saw coolant temps over 200* no matter the outside temperature. The FAL fans moved something like 5600 cfm.

    Edit: I keep forgetting about all of the electronic sophistication built into vehicles today, which changes the game as far as my old-school thinking! The thermostat opens at 170* and stays completely open.
    Last edited by BadAV; 01-12-2017 at 07:15 AM.
    Daily driver: 2012 4LT Centennial Grand Sport Corvette convertible, Vitesse throttle controller, tweaked timing tables & tranny tables

    Gone after 14 years but never forgotten: 2002 Z71 Chevy Avalanche, heavily modded to 475 hp. Magnacharged, cammed, stalled, tuned w/HP Tuners. It was a blast to drive!

    Replaced by 2015 F150 FX4 Supercrew Lariat Blue Flame metallic, 3.5 Ecoboost

Page 3 of 4 FirstFirst 1234 LastLast

Sponsored Links

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Similar Threads

  1. 170* Stat ?????
    By MudnRox in forum F150 Ecoboost Performance
    Replies: 35
    Last Post: 08-04-2016, 11:29 AM
  2. Custom Low Temp Thermostat
    By Daltonkk in forum F150 Ecoboost Performance
    Replies: 0
    Last Post: 01-07-2016, 09:18 PM
  3. 170 Degree T-Stat
    By Daltonkk in forum Wanted
    Replies: 1
    Last Post: 01-05-2016, 10:33 PM
  4. 170 T-stat
    By Rutt3.5 in forum F150 Ecoboost Performance
    Replies: 18
    Last Post: 09-14-2015, 11:34 AM
  5. Torque Convertor Lockup Speed vs. Trans Temp vs. Coolant Temp
    By Mike Wood in forum F150 Ecoboost Chat
    Replies: 21
    Last Post: 11-13-2014, 07:10 AM
Connect with us: F150 Ecoboost Forum on Twitter F150 Ecoboost Forum on Facebook F150 Ecoboost Forum RSS Feed
Find us on Google+