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Old 12-23-2001, 11:01 PM   #1
masterwoo
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Default WRX Engine Warm-Up Questions

This is my first Subaru/New Car, so would appreciate any feedback regarding any engine warm-up tips:

I was told at a younger age that it typically takes an engine less than 5 seconds to warm-up. Althought it is not recommended to push it in the first min. Here is the challenge:

Due to the landscape of where I live and the 1st-2nd gear ratio, I do need to get to 4,000 RPMs (no higher) or the 2nd gear will be choking. Considering I am in Atlanta (milder weather), am I pushing the engine too much? What is the general rule to warm the engine? Will Synthetic oil help? Or maybe I just need to crawl up the hill doing 15 miles an hour in 1st gear?

Appreciate any feedback. Have a great day!
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Old 12-23-2001, 11:12 PM   #2
XazerpmiX
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when ever I can I let my car warm up for about 5 min before I drive it. and when I can't, I take it easy and don't go over 3-4k rpms until it's completely warm.
One thing you could do is get a remote starter and use that to warm up your car in the mornings

Mike
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Old 12-24-2001, 03:58 PM   #3
touch
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i've also been curious about the subject. i really want to keep my engine happy for a long time, but no where in the owner's manual could i find anything on the subject. i had a jeep before my rex, and it's manual said to never drive the car within 10 seconds of starting it up. i thought that was an unusually short time, especially after your car's been sitting in freezing temperatures without oil on the gears or on the engine (sitting at the bottom of the pan). but chrysler says 10 secs, even cold.
on the other hand, many of my car-head friends won't move their vehicles until the temperature needle begins to move, (i've had to sit freezing our asses off in their cars for 5-10 mins. before they start to drive). so there you have opposite ends of the spectrum.
i'm considering putting in a remote start with my alarm system pretty soon, that will give me longer warmup times for sure.
i don't know what the best recommendation is for our cars, but i would like my engine to last a quarter million miles if it can! jeez, i just checked the calculator. and with the amount of miles i drive on average, that would take 20 years....go subie go!
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Old 12-24-2001, 05:51 PM   #4
Richard L.
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Engine warm up has been discussed in great length in the past. I hate to say this, but you might want to do a search on the subject. As for me, I usually let my RS warm up for around 30 seconds before gradually driving off. I don't go above 3000 rpm until a couple of minutes after my coolant has reached operating temperature.

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Old 12-25-2001, 09:46 PM   #5
masterwoo
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Default Thanks everyone's feedback

Thanks. I did the search, but found most comments came from non-wrx owners (non-turbo - not that it makes a big difference), but also not too sure if I should follow some of the practices provided. I was hoping to get different feedback.

A lot of suggestions were to let the car warm up until the temperature gauge (coolant not oil) reached either middle or above the C. One would question the extra wear and tear of the idle engine (roughly an additional 3-7 miuntes of running=1-4 miles each time!), not to mention the amount of gas it would waste for such exercises over the life of the engine. Hopefully these owners change their oil a little more frequently than 3,000 miles.

The funny thing is my 94 Taurus (3.8L) never had the luxury to enjoy the 3-5 miuntes warm up when I lived in MN for 3 years. I waited for 10 seconds and then drive it slowly (Not that it was capable of going fast. ) After 100K, it still does not consume any oil. I hate to think a Subaru will need more care and maintenance than my white whale.

Again, thanks for those who replied and read the questions posted. I am sorry if this is something that was posted before. Still look for sugestions to prolong my first/new car. Happy holidays!
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Old 12-30-2001, 03:21 PM   #6
WRX34
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This has been posted before too.

I wait a few mins.(depending on temp) Don't have to wait until all the way up to normall running temp, but at least registering on the gauge. Or if in a hurry drive under 3000rpm so that the oil and fluid temps are up to optimal operating temps first, especially with that nice little turbo under the hood. I think the little snail wants nice clean, cozy oil and lots of it!

-JR
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Old 12-30-2001, 10:44 PM   #7
EMDExpressWRX
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The engine will not warm up evenly by letting it idle for minutes after start up. Best to wait until oil pressure has stabilized, then move away slowly, ever increasing soeed but not exceeding between 3-4 thousand rpm until the at least the coolant has reached operating temp. Remember that the oil heats up slower than the water.
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Old 01-02-2002, 01:51 AM   #8
WRXnFX
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Yup, this has been in a number of posts as recent as a few weeks ago. And, it has been discussed by turbo'd Subaru owners. Here are links to the posts...

http://www.i-club.com/forums/showthr...ghlight=warmup

http://www.i-club.com/forums/showthr...ghlight=warmup

Here is a really good one...

http://www.i-club.com/forums/showthr...ghlight=warmup

Hope this helps.
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Old 01-02-2002, 07:55 PM   #9
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ok guys/gals, engine warm up was something that was done back in the days of carb. and chokes......those days are gone, and so should engine warm up. don't stress it, crank the puppy up, wait all of 10 sec. and off ya go, taking it easy of course till operating temp has been reached.......and yes, you do need to wait for the oil pressure to build, but that takes all of 2-3 sec.

just don't be gunning it the before proper operating temp has been reached, unless it's an emergency of course.
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Old 01-03-2002, 01:41 AM   #10
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That doesn't sound like good advice when it's ten degrees outside. The warm-up time also lets me enjoy a warm and comfy interior.
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Old 01-15-2002, 04:50 PM   #11
newgrandpa
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let the car warm up for 45-60 seconds and then
drive it easy for about 2 miles. that will warm
up all the moving parts (engine trans diff etc).

letting it sit for long periods of time is a
waste because all you are warming up is the
engine and nothing else. besides you are wasting
alot of gas and polluting the air. remember your
worst gas mileage comes when the car is running
and sitting still.

Quentin
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Old 01-26-2002, 05:06 PM   #12
hunter001
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Quote:
Originally posted by newgrandpa
let the car warm up for 45-60 seconds and then
drive it easy for about 2 miles. that will warm
up all the moving parts (engine trans diff etc).

letting it sit for long periods of time is a
waste because all you are warming up is the
engine and nothing else. besides you are wasting
alot of gas and polluting the air. remember your
worst gas mileage comes when the car is running
and sitting still.

Quentin
I agree totally...

Basically, when a car has sat for about 5 hours or more, there would be absolutely no oil in the engine. The oil in the engine would have all flowed into the oil pan below. So when starting up, you need to wait for about 60 secs for the oil to re-circulate in the engine. The oil cannot/will-not circulate in 10 secs or whatever was quoted by an earlier poster. That is when the most wear and tear happens on the engine, since there is a lot of metal-on-metal rubbing happening at that time. But it takes only about 60 secs or so during normal warm weather, for the oil to recirculate in the engine. It takes longer when the outside temperature is cold - oil does not flow as readily when cold, when compared to the flow when warm !! For illustrating this, pour a bit of cooking oil on an ice-cold saucepan and try to move the oil around. Now heat up the saucepan and try to move the oil around it again. Surprise ! The warmer the saucepan, the better/faster the oil moves around in it.

But it does not make sense to keep the car idling for too long, since then only the engine heats up, while other sub-systems of the car like the transmission etc, remains stone cold and the car would be needlessly consuming fuel. Also, it does not warm up evenly or well. So it makes sense to start the car up, wait for about 1 minute (during warm weather - wait longer during cold weather) and then drive gently for the next couple of miles (when all the sub-systems and the engine would reach normal operating temperatures), before doing any high-rpm runs.

Cars like the BMW M5 have a variable redline and the car would not permit you to go above a certain rpm, until the engine has warmed up. Unfortunately, Subaru has not provided such a protection, and morons floor the car from a dead stop and take off like a bat out of hell. I sincerely sympathise with such cars, who have to take such abuse from these ignorant owners.

Later...AH
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