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Installing New Thermostat #4605094
12/16/17 07:16 AM
12/16/17 07:16 AM
Joined: Dec 2010
Posts: 963
Lexington, NC
tc1446 Offline OP
tc1446  Offline OP
Joined: Dec 2010
Posts: 963
Lexington, NC
A diagnostic test on the Ranger showed that it needed a new thermostat. I've ordered an OE Motorcraft which comes with gasket. Does the gasket go on dry or does it required any sort of sealant?


'13 Accord EX-L 2.4L (100K) M1 & FU
'00 Ford Ranger 4.0L {65K} M1 & FU
'18 Polaris Slingshot 2.4L GM
'07 Kioti CK-30
Re: Installing New Thermostat [Re: tc1446] #4605098
12/16/17 07:31 AM
12/16/17 07:31 AM
Joined: Jul 2005
Posts: 30,416
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,416
NY
I always spray them with this, and never had a problem.
Link for illustration purposes:

https://www.walmart.com/ip/Permatex-8006...13=&veh=sem


God Bless Our Troops

Re: Installing New Thermostat [Re: tc1446] #4605099
12/16/17 07:32 AM
12/16/17 07:32 AM
Joined: Apr 2014
Posts: 1,249
South Central PA
Delta Offline
Delta  Offline
Joined: Apr 2014
Posts: 1,249
South Central PA
I think it's more of a preference thing, a small amount of sealant wouldn't hurt. The housing on my S10 only really requires the o-ring gasket on the thermostat itself. I applied a small amount of Permatex sealant on the housing just for piece of mind.


'17 VW GTI 2.0T - 6MT - 9K - Edge 0w40
'15 Camry SE - 2.5 - 20K - PP 0w20
'99 S10 - 2.2 5MT - 155K - T6 0w40
Re: Installing New Thermostat [Re: tc1446] #4605100
12/16/17 07:38 AM
12/16/17 07:38 AM
Joined: Feb 2011
Posts: 257
Midwest
stevejones Offline
stevejones  Offline
Joined: Feb 2011
Posts: 257
Midwest
I've used gasket tack only to hold it in place while the bolts are fitted - this usually applies for vertical surfaces (rear diifs, waterpumps, etc.). If the mating surfaces are horizontal, I don't bother with extra stuff...

Re: Installing New Thermostat [Re: tc1446] #4605114
12/16/17 08:13 AM
12/16/17 08:13 AM
Joined: Sep 2013
Posts: 10,442
Indiana
dlundblad Offline
dlundblad  Offline
Joined: Sep 2013
Posts: 10,442
Indiana
I would if any mating surfaces are pitted.

Last edited by dlundblad; 12/16/17 08:14 AM.

03 Jeep WJ 4.0 200k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 149k Rotella T5 10w30 Supertech ST3980

Re: Installing New Thermostat [Re: tc1446] #4605427
12/16/17 02:58 PM
12/16/17 02:58 PM
Joined: May 2016
Posts: 717
Canada
i_hate_autofraud Offline
i_hate_autofraud  Offline
Joined: May 2016
Posts: 717
Canada


Check for sure in a service manual.

However, I use just a little sealant to keep the gasket lined up during assembly.

Using a heavier, thicker sealant is handy on pitted areas to reduce leaks past the gasket.

If you use too much, it'll ooze out on the inside and float around until it plugs a
rad passage, so easy on the goop!


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