Thermostat Temp - The 1947 - Present Chevrolet & GMC Truck Message Board Network

nroden · 06-02-2003, 10:53 AM

Found that the thermostat in my truck was a 160 so replaced it with a 195. I have heard before that 190 or 195 is the optimum temperature because the oil is warmer and slicker and there is less wear. True?

Jwill41 · 06-02-2003, 11:06 AM

I think the 190-195 is for later model engines but I am probably wrong.

Longhorn Man · 06-02-2003, 11:18 PM

Some people believe that the condinsation evaporates better at about 200 degrees, and therefor a better temp to run.
I run 160 degree stat becouse my engine runs 10 times better at cooler temps, and my MPG goes up.

nroden · 06-03-2003, 09:06 AM

now I know

BobbyK · 06-03-2003, 09:27 AM

GM spec's out the 195 in thier TPI+TBI vehicles.They designed the eng. to run in that temp. range.It's an ECM(computer) thing.
Heat does play a role but the major factor with how an oil flows is it's viscosity rateing.
Of course a warm oil flows better than a cold one but how thick it is (viscosity) plays a role too.

06-02-2003, 10:53 AM	#1
nroden Registered User Join Date: Jun 2001 Location: Springfield, MO Posts: 1,098	Thermostat Temp Found that the thermostat in my truck was a 160 so replaced it with a 195. I have heard before that 190 or 195 is the optimum temperature because the oil is warmer and slicker and there is less wear. True? __________________ Nick Rodenberg 72 Cheyenne 10 V8 350/TH350 white/ochre/white/ochre, ochre/saddle interior Retired and in the dry... still runs. I now drive Red '01 Ford Focus... better MPG!!!

06-02-2003, 11:06 AM	#2
Jwill41 Registered User Join Date: Aug 2002 Location: Farmers Branch, Tx Posts: 1,009	I think the 190-195 is for later model engines but I am probably wrong. __________________ http://www.picturetrail.com/jwill41 67 1/2 ton GMC short step side 68 1/2 ton Chevy long fleet side 72 1/2 ton Chevy Suburban 99 1/2 ton Chevy Suburban founder (and only member) of the primer/clearcoat club

06-03-2003, 09:06 AM	#4
nroden Registered User Join Date: Jun 2001 Location: Springfield, MO Posts: 1,098	now I know __________________ Nick Rodenberg 72 Cheyenne 10 V8 350/TH350 white/ochre/white/ochre, ochre/saddle interior Retired and in the dry... still runs. I now drive Red '01 Ford Focus... better MPG!!!

06-03-2003, 09:27 AM	#5
BobbyK Registered User Join Date: May 2000 Location: Petrolia,Ontario,Canada but working in Port Huron,Mi. Posts: 1,771	GM spec's out the 195 in thier TPI+TBI vehicles.They designed the eng. to run in that temp. range.It's an ECM(computer) thing. Heat does play a role but the major factor with how an oil flows is it's viscosity rateing. Of course a warm oil flows better than a cold one but how thick it is (viscosity) plays a role too. __________________ 71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE

06-02-2003, 11:18 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Some people believe that the condinsation evaporates better at about 200 degrees, and therefor a better temp to run. I run 160 degree stat becouse my engine runs 10 times better at cooler temps, and my MPG goes up.



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