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10-05-2014, 07:54 PM | #1 |
Drives: 2010 yaris 3 door hatch Join Date: Jun 2013
Location: Sheboygan Falls, Wi.
Posts: 506
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hotter thermostat for more mpg
Has anyone installed a hotter thermostat for increased mpg? I had a scanner on my 2010 yaris for the 1st time, I noticed the temp never got hotter then 185. It make sense b/c it has a 184 stat in it & it was cool out that day (low 50s).
I've had some experience on GMs with hotter t stats & improved mpg. It usually adds a couple highway mpgs esp. on colder days. The TDI guys have had great luck with them. |
10-06-2014, 05:52 AM | #2 |
Drives: 2009 Base Hatch 2 Dr Auto Join Date: Dec 2008
Location: nj
Posts: 4,790
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I tried a block heater and it didnt improve mpg enough to make it worth the $$ and trouble.
I doubt very much you would notice the increased mpg (if any) from a hotter thermostat. And I can think of problems like over heating the engine in stop and go traffic in summer or burning out the fan sooner or something similiar.
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Synthetic Oil: Its All In Your Head |
10-06-2014, 07:17 AM | #3 |
Drives: 2010 yaris 3 door hatch Join Date: Jun 2013
Location: Sheboygan Falls, Wi.
Posts: 506
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Why wouldn't I see an improvement? Esp. if the engine is running right at the t stats rating, the fan shouldn't kick on till 205. The coolant temp sensor that tells the computer the temp has a huge impact on fueling the engine.
I had a gm truck that I ran a 180, 195, & 205 stats. I lost mileage with the 180 (-2-3mpg) & gained some with the 205 stat over the stock 195. |
10-06-2014, 07:33 AM | #4 |
Drives: Jeep Cherokee XJ 1996 Join Date: Jul 2009
Location: Lahore, Pakistan.
Posts: 38
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If you live in a cold area that makes sense otherwise just kill this thought of yours :p
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10-06-2014, 02:08 PM | #5 | |
Drives: 2009 Base Hatch 2 Dr Auto Join Date: Dec 2008
Location: nj
Posts: 4,790
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Quote:
But I might be wrong. Try it and see. You can always go back to regular.
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Synthetic Oil: Its All In Your Head |
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10-06-2014, 02:41 PM | #6 |
Drives: 06 Polar White 5dr, 13 Soul 4u Join Date: Oct 2008
Location: Georgetown, Ontario, Canada
Posts: 5,740
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You've touted personal and known experiences with other manufacturers. T-stats are cheap enough to experiment. Do it, be the first here and blaze a trail.
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10-06-2014, 07:53 PM | #7 |
Drives: 2010 yaris 3 door hatch Join Date: Jun 2013
Location: Sheboygan Falls, Wi.
Posts: 506
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Yeah, I've been looking at different ones. The yaris takes one with a 56 mm base, I'm having trouble finding a hotter rated one. I might have to combine 2 to make one.
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10-07-2014, 07:29 PM | #8 |
Only Happy When it Rains
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Or you could block off some of the front vents and get the same effect with a little better aerodynamics to boot.
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