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PostPosted: Sat Jan 07, 2012 3:01 pm 
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Supercharged

Joined: Thu May 12, 2005 11:50 pm
Posts: 5789
Location: So California
Car Model: 64 Plymouth Valiant
http://www.greencarreports.com/news/107 ... 10-percent

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64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes
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PostPosted: Sat Jan 07, 2012 4:21 pm 
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Joined: Thu Oct 31, 2002 5:39 pm
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Location: North America
Interesting article, and interesting Jay Leno clip. The article's claim about fuel economy, though, is not applicable to most unmodified vehicles. The engine management system is going to turn the fan on when the coolant reaches a programmed temperature. That will happen whether the system contains water, green coolant, orange coolant, or Evans waterless coolant. But if the fan control can be reprogrammed with a higher setpoint and/or a higher-temp thermostat can be found and can be installed without causing cooling-unrelated problems (such as hot-start/hot-idle issues in carbureted fuel systems), then you can realise a fuel savings.

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PostPosted: Sat Jan 07, 2012 6:56 pm 
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EFI Slant 6

Joined: Wed Mar 22, 2006 9:19 pm
Posts: 348
Location: Portland, Oregon
There has been much discussion about this coolant in the trucking industry. Mileage increases as noted, come from higher operating temps.
I've thought about the change for my Frieghtliner, but the cooling system holds 14 gallons, and I've got engine shut-offs set at 230 degrees. To get the advantage would require reprograming the control computer, a very high thermostat, and a very high outlay ($500 more or less) for the 14 gallons of coolant.
On the other hand, a 5 or 10% fuel savings on a truck that runs through about $80,000 a year in fuel could be a good thing.

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