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Old 08-06-2004, 07:25 PM   #1
Predator3
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Default how important is it to break-in fully?

i'm at 600 miles and i'm dying to see what power it has above 4K RPM, how important is it to fullfill the 1000 mile mark under 4K RPM?

Thanks
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Old 08-06-2004, 07:27 PM   #2
endeavor
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i think you should spare everyone the holy war that you've just restarted and just use the search button.

EDIT: 4k+ is freakin awesome
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Old 08-06-2004, 07:42 PM   #3
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I don't think it'd hurt to give it a go a few times while working on your last 400 miles. : )

Enjoy!
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Old 08-06-2004, 07:50 PM   #4
Predator3
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Quote:
Originally Posted by endeavor
i think you should spare everyone the holy war that you've just restarted and just use the search button.

EDIT: 4k+ is freakin awesome
i'm not restarting the "holy war," I'm just asking how important it is...

For example, BlueF's response is what i was looking for...
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Old 08-06-2004, 07:53 PM   #5
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You'll have to start over and do another 1K below 4k rpm's.

I wouldn't necessarily go launching the vehicle but a few intermittent spikes over 4K will not kill your car... well, I hope not because that's what I did.

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Old 08-06-2004, 08:12 PM   #6
endeavor
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Quote:
Originally Posted by Predator3
i'm not restarting the "holy war," I'm just asking how important it is...

For example, BlueF's response is what i was looking for...
Ok this is what I've observed. There are four methods for break-in:

1) Drive the hell out of the car as soon as you get it off the lot.
2) Follow the manual (under 4krpms until 1000 miles then drive however you feel like).
3) Same as (2) but change 1000 miles to some other value.
4) Start out by keeping it under 4k for a while then gradually increase your rev limit.

I did (4) and my car runs great. Lots of people have done the other methods, but there is no broad emperical data to suggest that one is better than the other. No one comes back after two years and says, "I blew my engine because I broke it in this way" or, "My car is faster/slower than other 2002s because I broke it in that way." Lots of people will tell you their opinions (all varying), but I have yet to see anything I'd consider solid science.

FWIW, Subaru made the car. They should have a pretty good idea of what you're supposed to do.

/gets off soapbox

EDIT: I redundently repeated myself.
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Old 08-06-2004, 11:10 PM   #7
Diabolical1 CC
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What do you drive?

<------------- Edit your profile and say here!

It says stay below 4000 except in Emergencies.

I had one and hit 5500 accelerating up to highway speed before I got creamed by a camper. Mind you not using cruise control was a killer on my ankle for that 500 mile trip. I'm now at 1100KM about 700Miles. One more long trip should do it.
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Old 08-06-2004, 11:32 PM   #8
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I got on it a few times before 1K miles, but not too much. Personally, I think 1K miles is way conservative, but like the man said, Subaru built it, they'd know better than I would. I think it's more important to vary RPM's, so leave the cruise off for a bit. Again, everyone will have a different outlook here.
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Old 08-07-2004, 04:15 PM   #9
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Definitely do not use cruise control in the break-in period. Especially on hills of course. Cruise on flat land is okay, but avoid "cruising" up hills.

I extended my break-in period to 22,000 miles and now just go whatever speed I feel like. I don't think I went much over 3000 RPMS the first 10,000 miles. My WRX runs perfect.

I think breaking your car in on the highway is the best way to do it. (Steady speeds, no shifting, etc)
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Old 08-07-2004, 04:46 PM   #10
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Funny I was told not to use Cruise because your not supposed to cruise at the same speed RPM all the time. You need to keep varing your speed / rpm. But keep it under 4000.

Such being the case a Highway steady speed not shifting would be the worst way to break it in.

As for 3000 RPM for the first 10,000miles? Why did you ever get a WRX?
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Old 08-07-2004, 05:15 PM   #11
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Quote:
Originally Posted by dubitancy
I extended my break-in period to 22,000 miles and now just go whatever speed I feel like. I don't think I went much over 3000 RPMS the first 10,000 miles. My WRX runs perfect.
Are you joking? Why did you keep it under 3k for so long? It's actually BAD not to vary your engine speed, especially for a duration of 22,000 miles.

Quote:
Originally Posted by dubitancy
I extended my break-in period to 22,000 miles and now just go whatever speed I feel like. I don't think I went much over 3000 RPMS the first 10,000 miles. My WRX runs perfect.

I think breaking your car in on the highway is the best way to do it. (Steady speeds, no shifting, etc)
Again, this is a bad idea. You need to vary your rpm speeds during the break-in process. Highways make it harder to do this since it's more difficult to vary engine speed as opposed to city driving where you are constantly changing.
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Old 08-07-2004, 05:21 PM   #12
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Quote:
Originally Posted by dubitancy
Definitely do not use cruise control in the break-in period. Especially on hills of course. Cruise on flat land is okay, but avoid "cruising" up hills.

you make a point here. you definately don't want to lug the engine at low rpms up a hill during break in

I extended my break-in period to 22,000 miles and now just go whatever speed I feel like. I don't think I went much over 3000 RPMS the first 10,000 miles. My WRX runs perfect.

you MUST be kidding. 22,000 mile break in? Everything is set into place LONG before 22,000 miles and HOW did you not go over 3000 rpms for 10k miles? my 89 year old grandmother drives her car harder than you.


I think breaking your car in on the highway is the best way to do it. (Steady speeds, no shifting, etc)

Wrong Again. The absolute LAST thing you want to do is to not vary your speeds or RPMS. I broke my car in for the last 400 miles of 1000 mile break in on the highway and I made sure to vary between 4th and 5th gear and from 65-85 mph the whole way.

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Old 08-07-2004, 05:24 PM   #13
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Quote:
Originally Posted by Diabolical1 CC
Such being the case a Highway steady speed not shifting would be the worst way to break it in.

As for 3000 RPM for the first 10,000miles? Why did you ever get a WRX?
Maybe you're right about the highway thing.

Under 3k is a bit of an exaggeration. I didn't go around redlining my car when I first got it is what I meant to say.
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Old 08-07-2004, 05:35 PM   #14
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Quote:
Originally Posted by whtlegacy
you MUST be kidding. 22,000 mile break in? Everything is set into place LONG before 22,000 miles and HOW did you not go over 3000 rpms for 10k miles? my 89 year old grandmother drives her car harder than you.
I was kidding!! April fools!!!
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Old 08-07-2004, 05:40 PM   #15
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Quote:
Originally Posted by Predator3
i'm not restarting the "holy war," I'm just asking how important it is...

For example, BlueF's response is what i was looking for...
are you just looking for justification on driving the car full out before you reach 1000 miles...i would follow the owners manual because subaru engineers know more about the car then a bunch of people on the interweb
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Old 08-08-2004, 12:12 AM   #16
Predator3
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lol i'm surprised at the amount of people who reacted to dubitancy's post lol...

Well i'm at 700 now and am taking it to 5K RPM now... i'll go up another 500 at 800 Miles and then wait for 1000 to floor it o 7K
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Old 08-08-2004, 12:35 AM   #17
Brad Pittiful
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Quote:
Originally Posted by dubitancy
I was kidding!! April fools!!!
it wouldve had some funnay if it were april
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Old 08-08-2004, 11:33 AM   #18
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Quote:
Originally Posted by Predator3
lol i'm surprised at the amount of people who reacted to dubitancy's post lol...

Well i'm at 700 now and am taking it to 5K RPM now... i'll go up another 500 at 800 Miles and then wait for 1000 to floor it o 7K
if you want to do that, it's fine. but honestly by now all the magic has happened with the rings and cam wear-in so it wouldn't hurt anything if you gave it a little hell.

what's critical is that you never beat on it while the engine is cold, no matter the mileage.
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Old 08-08-2004, 05:08 PM   #19
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Quote:
what's critical is that you never beat on it while the engine is cold, no matter the mileage. Today 12:35 AM

so so so true. Live by these words. A properly warmed up engine is a happy one.
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Old 08-08-2004, 09:41 PM   #20
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well let's think about it: out of the people that did make an attempt to keep it below 4k rpm, how many of them gave it WOT from 2k and then tried to let up at 4k?

when it hits full boost, that is a lot of load even though the engine is only at 4k. if you really wanted to baby it during break in you should avoid WOT altogether and I bet no one does. and here we have all these happy, perfectly functional engines.

my Evo came with factory filled Mobil1 10w30. I drained it immediately and refilled with Castrol GTX 10w30 and then drove somewhat easy for the 600 mile recommended break-in, and then gave it hell. runs great.
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Old 08-09-2004, 12:39 AM   #21
Predator3
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lol yeah i passed 800 today and ran it...just couldn't wait nemore

By the way i love how the car feels like it lifts off of the ground, especially at 5K...

Being used to my Explorer, i didn't know i was at 80 MPH w/in a matter of seconds...I'm happy...for now, then let the modding begin
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Old 08-09-2004, 08:45 AM   #22
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Quote:
Originally Posted by ColinL
my Evo came with factory filled Mobil1 10w30. I drained it immediately and refilled with Castrol GTX 10w30 and then drove somewhat easy for the 600 mile recommended break-in, and then gave it hell. runs great.
You poured out synthetic in favor of conventional? Even though they share the same rating, the synthetic is designed to flow much better on cold starts.. avoiding startup wear. Each cold start is equivalent to running about 500 miles on a properly warmed up engine... synthetic is used to lower that number.
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