Mike, you may consider waiting till spring, before you install the 180.

Several of us run 180 year-round (including in BC and Alberta) with no problems.

but if the pcm is set for a 195, wont it use more fuel trying to get to correct operating temp?

The PCM isn't 'set' for 195, nor will a 180 cause any open loop/closed loop issues.

With a 160, yes. Not with a 180.

when i did my lim gaskets, i went with a 180. my mpg was about 14-15 mpg. i went back to a 195 last week and just got it was just above 16.

in my log, i streched a whole 234 miles and filled up 14.35 gallons

well, my car is a gas easy.

i get 320miles per tank. about 17-20 average mpg.

and when im on the highway, 32-35 mpg :P

idk if its strange, but thats wat i got.

hmmm, well i wanna put this sucker in, but i gotta borrow a drill,

wat kind of bit would i use?

Well-written Dex Cool article, Willwren. You're helping to convince me of the evils of Dex Cool. And that'* tough when you've got years of GM-sponsored training that tells you there'* nothing wrong with the stuff! :P

MM, two 1/16" holes will do.

DS, I threw opinion and rumor aside and tried to concentrate only on the physics/chemical nature of the materials. That article, belive it or not, is being hard-hit off my server and is being linked by several other sites now.

cool

yay thanks that was real good info!!
As soon as i do all my mods i'll drill my thermo also...good stuff peeps thanks a lot!!!