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<DIV>You sure to get lots of opinions and advice on this one ... !</DIV>
<DIV>Here is my take:</DIV>
<DIV>The concern with cold running, particularly if the engine has cooled
overnight is the oil temperature; no matter what engine oil you use its
lubrication properties are degraded when running below operating temps; think
trying to circulate treacle. In the 60’s there was always the concern of
breaking rings if the engine was revved too soon when cold; I don’t think that
our AH have this problem.</DIV>
<DIV>The water temp is not the perfect indicator of oil temp but it is all we
have; water temp can be very different to oil temp particularly when starting
from cold. </DIV>
<DIV>So in my opinion it is best is to “gently” start driving as soon as it is
running stably and not likely to stall on you. Gentle means no revving through
the gears and particularly no labouring in the wrong gear (sleeve bearings); the
engine will warm up quicker when driving rather than sitting idling as the
losses are higher when it is doing some work.</DIV>
<DIV>Also, I have always tried to shut off the choke as soon as possible, as
running with too rich a mixture has the possibility of diluting the cylinder
wall lubrication when you most need it.</DIV>
<DIV>rg</DIV>
<DIV> </DIV>
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<DIV style="font-color: black"><B>From:</B> <A title=eyera3000@gmail.com
href="mailto:eyera3000@gmail.com">i erbs</A> </DIV>
<DIV><B>Sent:</B> Wednesday, February 10, 2016 8:11 AM</DIV>
<DIV><B>To:</B> <A title=healeys@autox.team.net
href="mailto:healeys@autox.team.net">Ahealey help</A> </DIV>
<DIV><B>Subject:</B> [Healeys] start up Temp</DIV></DIV></DIV>
<DIV> </DIV></DIV>
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<DIV dir=ltr>So it has been many years since I have had a working choke in my
car.
<DIV>I know I need to have oil pressure before I head out on a cold morning, but
what temp should I wait for before driving off? I have just held the jokes up by
hand until the car reached 190 degrees and ran without the choke. </DIV>
<DIV>It has been in the 30s in the morning, but is is warming up. Today was 42.
So at what temp is OK to start driving the car? It has been over 7 years since I
have had the car on the road and I drove it sparingly then. I now try to
drive it as much as possible.</DIV>
<DIV>
<DIV> </DIV>
<DIV>
<DIV class=gmail_signature>
<DIV dir=ltr>
<DIV>
<DIV dir=ltr>Ira Erbs
<DIV>Portland,OR</DIV>
<DIV>1959 BN4 100-6</DIV>
<DIV>with BT7 engine and disk
brakes.</DIV></DIV></DIV></DIV></DIV></DIV></DIV></DIV>
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