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Old 06-12-2013, 05:31 PM   #29 (permalink)
oil pan 4
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Join Date: Jul 2011
Location: NewMexico (USA)
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Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
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90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

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Quote:
Originally Posted by Frank Lee View Post
In my experience (several years with NO fan in the F150, including towing) the only time the fan is needed is when the vehicle is going too slowly to move air past the radiator- for example waiting at stoplights or extended parking lot maneuvering- even moreso if the A/C is on. I do completely remove my winter front when it's warmer out.
This is what I have found too.
(I don't have A/C and cant comment on its use)
The Fans stay off about 99% of the time when vehicle speed is below 35mph and stay off all the time above 35mph.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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