180 Thermostat Mpg

[tenny]

Hey Guys

For those of you that switched to a 180 thermostat from the stock 195 did you notice any difference in MPG? I know on my Z28 that I had when I went from 180 to 160 I lost some mpg :(

I would like to get the alero down to a 180 since I think 195 is way to hot but I dont want to sacrifice mpg to do it.

[AGT]

I showed a slight increase I believe. :huh:

[tenny]

really i always thought the con to a low temp was that it hurt milleage

[mobs241]

the only way it would hurt mileage is if you went all the way down to a 160, and the reasson that would be is cause the computer thinks the car isnt warming up so it adjust everything to run more rich and such. dont go that low, a 180 is fine just no lower.

[alerochick242]

Cool. I didn't know you could change up thermostats. Learned something new today...

[tenny]

how often do you guys change thermostats? Does going to a 180 effect the heat in the winter at all? I wouldnt think so? thats still what most cars come with.

[AGT]

The heat is not effected, but the time it takes to get to a temperature that a 195 gets to is slower. It doesn't make an operating temperature lower it makes the coolant flow start earlier. Currently I have the thermo installed and I appreciate the cuts I got from it from installing it. I used to run almost to the 3/4 mark in Summer and now it stay below 1/2 or just a hair over. I think it is worth 12 bux and an hour :thumbsup:

[tenny]

mine usually sits right at the half mark, maybe its already got one? it only has about 18,000 miles on it though so i doubt the previous owner would have bothered (rental car company)

[DCAleroGL]

I have a 2000 V6 without the 180, and I run at the 1/2 mark. On really hot days it may get a little higher, but that's it.

[tenny]

hmm so maybe i'll be running around the 1/8 mark with the 180?

[flalero]

Originally posted by atramell@Sep 30 2004, 12:01 PM
The heat is not effected, but the time it takes to get to a temperature that a 195 gets to is slower. It doesn't make an operating temperature lower it makes the coolant flow start earlier. Currently I have the thermo installed and I appreciate the cuts I got from it from installing it. I used to run almost to the 3/4 mark in Summer and now it stay below 1/2 or just a hair over. I think it is worth 12 bux and an hour :thumbsup:
wow, if you ran near the 3/4 mark, then something was really wrong with the car, besides the thermo. My car never gets that high, even in the hot summers down here in Florida, and I still have the stock thermo. Possibly intake manifold leak?

[AGT]

Originally posted by flalero+Oct 1 2004, 02:59 AM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (flalero @ Oct 1 2004, 02:59 AM)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-atramell@Sep 30 2004, 12:01 PM
The heat is not effected, but the time it takes to get to a temperature that a 195 gets to is slower. It doesn't make an operating temperature lower it makes the coolant flow start earlier. Currently I have the thermo installed and I appreciate the cuts I got from it from installing it. I used to run almost to the 3/4 mark in Summer and now it stay below 1/2 or just a hair over. I think it is worth 12 bux and an hour :thumbsup:
wow, if you ran near the 3/4 mark, then something was really wrong with the car, besides the thermo. My car never gets that high, even in the hot summers down here in Florida, and I still have the stock thermo. Possibly intake manifold leak? [/b][/quote]
How hot does it get down there....and when I say 3/4 mark thats rounding up its above half but I can't get it to the 3/4 mark even hot rodding it. I was speaking of summers like 105 heat index and such here.

[flalero]

Okay, that makes a little bit more sense. I was wondering.