My results after drilled180 stat installation - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 08-12-2004, 05:53 PM   #11
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Originally Posted by TelePlayer
Great discussion, Will.

How the heck do you get such good mileage? I get 20 MPG around town and at the most 23 MPG highway. And I am definitely not running rich.

I'd like some others to weigh in on mileage for SC bonnies.
I get 27-29 mpg in my '93 with the 180 tstat.

I think that the main engines that have benefited are the ones with the upper intake failure. It'* just proven by countless ones who have done it to work at saving the upper intake.
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Old 08-12-2004, 10:42 PM   #12
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Ive been running 180 stats in everything. Ive got a 97 bonne with 125000 miles, original intake, trans,alternator,coils, everything but the water pump. Anyway, 195 stats were NOT introduced to keep oil from 'sludging'. they were introduced as an additional way to lean out engines in the search for "responsible energy managment'. Sludge was a problem with the 'road draft tube' technology simply because it was inefficent at best. The pcv systems are of course alot better but must be maintained. If anyone has major sludge activity going on, its their own damn fault. You cant blame it on any brand of oil, you cant blame it on reasonably lower temps. Change the oil, check pcv system often.

As far as temp swings are concerned, the swings are not a problem, only the RATE at which it swings. Cast iron is happy at any temp as long as it doesnt get there too fast...
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Old 08-13-2004, 05:21 AM   #13
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I have a 180 stat and it helps a bit , but when driving in the city the car runs hot , thats just the way it was designed. keeping your rad fans on all the time is the key to a cooler engine,,,
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