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Unread 11-14-2009, 05:03 AM   #1
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Question Warming up your engine

When you get the engine warm, do you just wait until you think the block is warm (say 2 minutes) the oil is warm, or the water is warm (this one is easiest to tell because all cars have water temp). Once the water is warm that is a sure way of knowing that the oil and block are warmed up but some cars don't have oil temp so you have to wait for water temp. It normally takes 10 minutes for my cars water to get up to temp.

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Unread 11-14-2009, 05:05 AM   #2
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...? You're not a bot but... What?

I usually look at my temperature gauge and once I see it start moving above 160, I know my engine is warmed up.
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Unread 11-14-2009, 09:40 AM   #3
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I dont worry about it too much, I just dont get on the throttle too hard until its up to temp.
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Unread 11-14-2009, 11:04 AM   #4
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I usually wait until the temp gauge is above the lowest line, then I just drive with a light throttle.
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Unread 11-14-2009, 11:58 AM   #5
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I get mine a little above the first line, and after a couple miles it's running the nomal 190..never goes past 190
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Unread 11-14-2009, 12:28 PM   #6
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An engine is best warmed up by driving it gently until operating temperature is reached. Idling an engine for prolonged periods is not good. The engine warms up faster when it has a load. So once started, if the windows are clear enough to drive, and you don't need to merge with freeway traffic, drive it. By the time I've got my seat belt on and the radio tuned, about 30 seconds, it's ready to drive, oil will be circulating by then.

On cold days like today, about 3* centigrade, if I was to idle my engine until operating temp is reached, it would take at least 20 minutes. If I drive it easy, it will be at temp in about 10 minutes. That means I get going sooner, my oil stays cleaner longer, I'm using less gas and making less pollution.

Pushing a cold engine hard is an invitation to a blown head gasket or oil starvation if cold enough.

Oil temp lags behind coolant temp. As long as you don't rev it up beyond what is needed to keep it running, and you are easy on the gas pedal, all will be good.
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Unread 11-14-2009, 02:49 PM   #7
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I just start driving. Not aggressively of course, but I just start driving normally. However my car doesn't seem to have any temperature gauges. Only a temperature light which never does anything.
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Unread 11-14-2009, 03:57 PM   #8
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Can anyone explain what actually causes a blown headhgasket on a cold engine? Is it because it gets very hot and then very cold again when the cold water hits the water jacket? Cause we all know that making something cold suddenly that was very hot makes it break, I was wondering if that is why the gasket goes...

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Unread 11-14-2009, 04:08 PM   #9
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I'd just wait for 2 minutes on any car in cold weather, 1 in warm weather .
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Unread 11-14-2009, 04:11 PM   #10
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I don't think cold engines tend to blow head gaskets for any paticular reasion. I'd guess it'd be overstressing and loosening a head bolt?


I've always heard that a cold overrev will throw rods on some engines, well within their normal rev band.


Personally, if it's over 50F outside, I just goferit. No need to let mine warm up.


However, if it's actually cold outside, I tend to let it sit and build some heat. My engine is a bit, erm, ill mannered when it's cold and has all the horsepower of a gerbil in a wheel untill it builds a little heat. How long it idles before I leave depends on how cold it is. That's fairly common for carb'd engines, I'm guessing, as my aunt's '71 F100(V8) and my dad's '84 F150(Same six mine has) were the same way. Absolutely no power when it's below freezing untill they've started to build a little internal heat.
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