Daox -
Quote:
Originally Posted by Daox
You had to see this comming. 
Did it make a noticable difference?  |
Good question. I made the switch in my early less-accurate data recording days. ... dig dig dig ... Ok, here are my gaslogs :
1999 Saturn SW2 with switch to hotter T-Stat
Code:
BEFORE
Stock T-Stat Miles Gal(US) MPG
08/31/2006 192.00 4.84 39.66
09/03/2006 148.00 3.23 45.82
09/07/2006 187.00 6.53 28.63
09/10/2006 140.00 3.64 38.46
09/13/2006 170.00 4.19 40.57
09/16/2006 202.00 6.85 29.48
09/19/2006 259.00 6.94 37.31
09/22/2006 265.00 7.04 37.64
09/26/2006 288.00 7.15 40.27
09/29/2006 275.00 6.99 39.34
TOTAL 2126.00 57.40 37.04
AFTER
Hotter T-Stat Miles Gal(US) MPG
10/02/2006 219.00 6.90 31.73
10/07/2006 279.00 7.00 39.85
10/11/2006 274.00 7.30 37.53
10/16/2006 305.00 7.25 42.06
10/20/2006 292.00 6.00 48.66(*)
10/23/2006 187.00 6.05 30.90
10/26/2006 232.00 5.72 40.55
10/31/2006 265.00 6.25 42.40
11/02/2006 246.00 6.30 39.04
11/07/2006 260.00 6.10 42.62
TOTAL 2559.00 64.87 39.45
39.45 / 37.04 = 1.0548 => 5.5% increase in MPG.
Soooooo, it
appears that I got a +5% increase in MPG. Here are my only modifications during this time :
Code:
2006/09/30 - Switched to 192-195 Coolant Thermostat (Napa Part #THM268)
2006/10/28 - Front wheel spoilers (modest aerodynamic upgrade)
(*) Now, here's the rub. On October 19, 2006, I discovered the P&G (Pulse and Glide) driving strategy. This was "mild" engine-on P&G, but my daily runs improved.
Therefore, after October 19th, I cannot say if it was the T-Stat or the modified driving style,
.
CarloSW2