Question -- did the operating temperature drop 5 deg F or did the
_coolant_ temperature drop 5 deg F? If the latter, it might indicate
a poorer heat transfer to the coolant from the hot engine parts. It
certainly (to me) does not indicate more efficient cooling. Please
feel free to convince me otherwise.
Regarding the fan cut-in temperature, an engine operates more
efficiently at higher temperature, provided the temperature does not
get so high that "bad things" happen (preignition, lubrication
failure, stuff like that.) Further, the coolant will not boil until
about 250 F (IIRC) because it is under pressure, so 210 is not very
hot, relatively speaking.
My 2d,
Donald.
> Date: Fri, 27 Jun 2003 09:10:31 -0700 (PDT)
> From: Adam Rodnitzky <arodnitzky@yahoo.com>
>
> I used Water Wetter mixed in with the coolant in both
> my Maserati 425 and Alfa 164LS not because they
> overheated, but because the way the factory designed
> the cooling systems, they ran very close to
> uncomfortably high temps (Alfa's high-speed fan didn't
> come on until 210 deg F!). Regardless, both cars
> operating temps dropped about 5 deg F, so it seemed
> the product did, in fact, work well.
>
> I also have glass fuel filters on my car and
> experience the same phenomenon -- air bubbles and an
> occasionally empty filter, but no difference in how
> the car runs.
>
> Adam
> '70 Spit Mk3
> '03 Saab 9-3SS
/// spitfires@autox.team.net mailing list
/// or try http://www.team.net/cgi-bin/majorcool
/// Archives at http://www.team.net/archive
|