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Old 08-26-2018, 09:56 PM   #1
Tk421STI
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Default New 2019 STI Break Procedure?

Hey guys!

Super excited- I came from an MK7 GTI to a 2019 STI. I'm 33, school teacher with a 2 year old boy. He loves it too! So far its been great, besides gas milage. lol

Anyway, i've been babying this thing for the last 2 weeks and so far I have 801 miles. I never revved above 3500rpm and varied the revs.

Anything else that goes in the break in process? I'm going to limerock park for the Historic festival and the drive through the Mass/Ct mountains is epic so I would like to get an oil change at 1,000 miles (end of this week).

When can I go full throttle? 1,000 mile oil change appropriate?
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Old 08-27-2018, 08:03 AM   #2
MagicDoorHinge
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Quote:
Originally Posted by Tk421STI View Post
Hey guys!

Super excited- I came from an MK7 GTI to a 2019 STI. I'm 33, school teacher with a 2 year old boy. He loves it too! So far its been great, besides gas milage. lol

Anyway, i've been babying this thing for the last 2 weeks and so far I have 801 miles. I never revved above 3500rpm and varied the revs.

Anything else that goes in the break in process? I'm going to limerock park for the Historic festival and the drive through the Mass/Ct mountains is epic so I would like to get an oil change at 1,000 miles (end of this week).

When can I go full throttle? 1,000 mile oil change appropriate?
I went full throttle a few times every day, just keeping it between 3500 and 4500 RPMs (except for a few choice spirited driving moments where I may have gone up to 6k rpms...) for the first 500 miles. Miles 500 to 1000 I varied revs a lot, engine braked a lot, made sure to cool down in between pulls--just like in the first 500 miles, but raised my 4500 RPM limit to 6500.

I'm only at 2300 miles now and haven't gotten a compression/leakdown test or anything so it's certainly too early to say whether my break-in worked.

I'll probably catch some flak for this but my manual says I don't need to change oil at 1000. I check it every time I fill the gas tank; no glitter and it's a lovely amber color so I suppose I'll change it at 3k or so. I'll make sure to remind everyone of my break-in procedure in my "stupid ej25 engine blew up" post.
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Old 08-27-2018, 09:26 AM   #3
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I'm at 200 miles so far, its only need 4 days. I have a 30 mile commute to work and I try to vary the RPMs. When I'm on the highway i will slow down and speed up trying to vary between 2,500-3,200. I set my rev limiter beep at 3500 rpm so it gives me enough time to avoid going past 4,000. I mis shifted once and went above that.

My gas mileage averaged 21mpg so far based on what I put back in the tank at the 200 mile mark. I will probably change my oil shortly after 1,000 miles. It will all depend on when i have some free time
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Old 08-27-2018, 10:49 AM   #4
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Did the dealership give you a break in procedure? I went easy for 1000 miles with variable revs. Changed oil for peace of mind at 1000 miles. Seems like you did what you could. Not sure if it's for the FA 2.0 motor that is in my wrx as opposed to the sti 2.5.
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Old 08-27-2018, 10:51 AM   #5
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I didn't baby my car, but didn't drive it like a race car either. I just drove it like I normally drive. Every engine that I've ever built, I've ran like I normally would in any car, and I've never had issues.

The manual states oil change at 6K, the dealer told me oil change at 6k....I just changed it at 5,200 (I had the time and just felt like it). No issues, oil looked normal, no drop in level over the mileage either. Keep an eye on the oil level for the first 1k, change the oil if you want (never hurts to have fresh oil).

I did notice that after about 1,000 miles, my mpg went up considerably. On highway trips (70-100 miles) I'm getting around 24mpg, and that's keeping it around 75mph.
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Old 08-27-2018, 11:12 AM   #6
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The best running engine I ever built I beat the living snot out of for break in. Limited RPMs somewhat but full boost and tons of engine braking were the norm. It never burned oil and had great compression/etc. All of the engines I "babied" all ended up burning oil and I never really felt like the rings seated fully. Not saying you should follow my process, but...eh, worked for me.
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Old 08-27-2018, 11:25 AM   #7
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Originally Posted by Tk421STI View Post
so I would like to get an oil change at 1,000 miles (end of this week).

When can I go full throttle? 1,000 mile oil change appropriate?
yes get it changed, it will be full of junk that won't show on the dipstick.

use heavy throttle right now if you want, controlling your rpm is what matters for a new motor
Just ease your way up to 5500 over the course of the next thousand miles
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Old 08-27-2018, 11:53 AM   #8
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Originally Posted by Slim_Jim View Post
I did notice that after about 1,000 miles, my mpg went up considerably. On highway trips (70-100 miles) I'm getting around 24mpg, and that's keeping it around 75mph.
I second this. I commute in pretty slow, city streets, and during break-in I was getting around 18.6 and now my exact same route I get 21. Part of it is probably me getting used to the car more or being a little less pedal-happy.
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Old 08-27-2018, 12:15 PM   #9
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Subaru's recommendation for all of this should be in the owner's manual. It's up on cars 101 too:

http://www.cars101.com/subaru/maintenance-2018.html
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Old 08-27-2018, 01:27 PM   #10
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I work for a Subaru Dealership and after finding out how the kid who delivers the brand new cars and drive them to and from the lots swapping cars from dealership to dealership, I wouldn't worry too much about breaking the car in.

Lets just say I had to pick up a car from the body shop and the delivery kid drove me there in a 2019 WRX with 43 miles on it which he was dropping off at another dealership afterwards. (someone was buying it)

It was a 35 minute drive on the highway and the whole time he was in 4th going 70-75 and would occasionally shift into 5th but failed too a few different times and would throw it into 3rd by accident, rev the **** outa it and put back in 4th. He did this twice and at stop signs and lights he would either roast the clutch or bog the car.

This is the same kid that told me he got to drive a few STIs, one of which was all the way from Connecticut......... god knows what he did to that thing.....
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Old 08-27-2018, 01:36 PM   #11
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I work for a Subaru Dealership and after finding out how the kid who delivers the brand new cars and drive them to and from the lots swapping cars from dealership to dealership, I wouldn't worry too much about breaking the car in.

Lets just say I had to pick up a car from the body shop and the delivery kid drove me there in a 2019 WRX with 43 miles on it which he was dropping off at another dealership afterwards. (someone was buying it)

It was a 35 minute drive on the highway and the whole time he was in 4th going 70-75 and would occasionally shift into 5th but failed too a few different times and would throw it into 3rd by accident, rev the **** outa it and put back in 4th. He did this twice and at stop signs and lights he would either roast the clutch or bog the car.

This is the same kid that told me he got to drive a few STIs, one of which was all the way from Connecticut......... god knows what he did to that thing.....
thats almost exactly how I drive my car
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Old 08-27-2018, 06:02 PM   #12
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I just did the 1,000 mile break in before allowing periodic spurts of WOT and using cruise control. The only thing I'm really vigilant about is being more careful not to lug.

FWIW, oil-wise, I was pretty overwhelmed over not just when but what to change to (exacerbated by this engine having a history of lubrication-related failures), and I'm still actively learning (so someone will correct me here if anything I say is wrong! ). The one immediate takeaway I got was that the Subaru factory fill and branded oil many dealerships have works fine for just about all Subaru engines, but is sub-optimal for the 257 and its tendency to thrash the hell out of oil. Further, it seems the major overall concern with many of the resource conserving oils in insufficient shear stability. Based on what I've read here regarding additives/bases, talking to the dealer and tuner, and viewing 257-specific UOAs, I changed out at a little under 3,000 miles to a specific HD. I did not drive the car as hard until I changed out the factory fill. (I'm planning to be pretty vigilant with UOAs on this car.)
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Old 08-27-2018, 06:29 PM   #13
Tk421STI
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Originally Posted by Slim_Jim View Post
I didn't baby my car, but didn't drive it like a race car either. I just drove it like I normally drive. Every engine that I've ever built, I've ran like I normally would in any car, and I've never had issues.

The manual states oil change at 6K, the dealer told me oil change at 6k....I just changed it at 5,200 (I had the time and just felt like it). No issues, oil looked normal, no drop in level over the mileage either. Keep an eye on the oil level for the first 1k, change the oil if you want (never hurts to have fresh oil).

I did notice that after about 1,000 miles, my mpg went up considerably. On highway trips (70-100 miles) I'm getting around 24mpg, and that's keeping it around 75mph.
Yeah I drive it normal just aware of my shift points. Good to hear about mileage going up after break-in. Is this common?
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Old 08-27-2018, 06:35 PM   #14
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Thanks guys!

Someone mentioned setting a shift reminder on the dash? How do i do that?

Also, I'm always going to put 93 gas. Do i really need to worry about engine issues? I thought we were passed this with the updated 19 models?
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Old 08-27-2018, 06:38 PM   #15
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Originally Posted by rtv900 View Post
yes get it changed, it will be full of junk that won't show on the dipstick.

use heavy throttle right now if you want, controlling your rpm is what matters for a new motor
Just ease your way up to 5500 over the course of the next thousand miles
After the oil change at 1k, still take it easy and gradually make my way up to 6krpm? Honestly, I wont be beating on this thing at all, its my daily and I commute with my son (he's 2). Only occasional mountain carving on super nice days or events.
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Old 08-27-2018, 08:23 PM   #16
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Quote:
Originally Posted by Tk421STI View Post
Thanks guys!

Someone mentioned setting a shift reminder on the dash? How do i do that?

Also, I'm always going to put 93 gas. Do i really need to worry about engine issues? I thought we were passed this with the updated 19 models?
Read the manual.

For break-in I would keep below 4000 rpm and stay away from full throttle for the first 1000 miles. Do use all throttle position and engine braking but keep under 4000 rpm.
Between 1000-2000 miles, you can use full throttle but keep away from redlining.
Between 2000-3000 miles, full throttle and redlining should be used a normally.
Change oil at 3000 miles.
Avoid prolong cold idling. Start the engine and if you can see oil temp, you can start driving gently without lugging (keep above 2000 rpm). Once reach 170F, you can drive normally.
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Old 08-27-2018, 09:19 PM   #17
Tk421STI
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Originally Posted by jasonwrx86 View Post
Read the manual.

For break-in I would keep below 4000 rpm and stay away from full throttle for the first 1000 miles. Do use all throttle position and engine braking but keep under 4000 rpm.
Between 1000-2000 miles, you can use full throttle but keep away from redlining.
Between 2000-3000 miles, full throttle and redlining should be used a normally.
Change oil at 3000 miles.
Avoid prolong cold idling. Start the engine and if you can see oil temp, you can start driving gently without lugging (keep above 2000 rpm). Once reach 170F, you can drive normally.
Thanks for the tip- I did read the manual. It said 6k mile oil change unless driven hard basically.

When you say Prolonged cold idling, you mean cold start and sitting there for it to warm up? I usually wait 1min max in summer and winter 2-5min.

How do you see oil temp? Is there an option on the dash/cluster?
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Old 08-28-2018, 12:15 AM   #18
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Quote:
Originally Posted by Tk421STI View Post
Yeah I drive it normal just aware of my shift points. Good to hear about mileage going up after break-in. Is this common?
In my experience, it has been the case on rebuilds and new cars.


Quote:
Originally Posted by Tk421STI View Post
How do you see oil temp? Is there an option on the dash/cluster?
Not on the STI, only the WRX's get that option to see oil temps. Doesn't really make sense to me, but I didn't design the displays. You'd think both cars would have it....
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Old 08-28-2018, 05:48 AM   #19
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Originally Posted by Tk421STI View Post
After the oil change at 1k, still take it easy and gradually make my way up to 6krpm? Honestly, I wont be beating on this thing at all, its my daily and I commute with my son (he's 2). Only occasional mountain carving on super nice days or events.
I think you mis understood

anyway, so then what is the max rpm you ever plan on shifting at?
I said 5500, so what is it?
4500? So gradually work your way up to whatever is your max shift point.

You asked about breaking in a new engine dude. That's what a break in is, a gradual rpm increase as the engine runs in it's new parts.
What were you looking for exactly?
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Old 08-28-2018, 06:33 AM   #20
Tk421STI
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Originally Posted by rtv900 View Post
I think you mis understood

anyway, so then what is the max rpm you ever plan on shifting at?
I said 5500, so what is it?
4500? So gradually work your way up to whatever is your max shift point.

You asked about breaking in a new engine dude. That's what a break in is, a gradual rpm increase as the engine runs in it's new parts.
What were you looking for exactly?
Yeah I got it, thanks for the help.
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Old 08-28-2018, 10:41 AM   #21
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Originally Posted by Tk421STI View Post
Thanks guys!

Also, I'm always going to put 93 gas. Do i really need to worry about engine issues? I thought we were passed this with the updated 19 models?
While the '19 models do get some neat engine upgrades the general assumption is that the same engine issues the STI has had for years still exist as the pistons aren't forged, no change to the oil pickup and system, etc.

Supposedly the tune for the Type RA's (which uses the same updated engine) are potentially even worse for the cars then the factory tunes prior to that so just something to keep in mind.
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Old 08-28-2018, 11:47 AM   #22
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Originally Posted by transmutation View Post
While the '19 models do get some neat engine upgrades the general assumption is that the same engine issues the STI has had for years still exist as the pistons aren't forged, no change to the oil pickup and system, etc.

Supposedly the tune for the Type RA's (which uses the same updated engine) are potentially even worse for the cars then the factory tunes prior to that so just something to keep in mind.
Has Subaru provided any specifics on the piston changes? Still hypereutectic, I assume. Stronger/thicker ringlands?
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Old 08-28-2018, 12:03 PM   #23
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Originally Posted by Slim_Jim View Post
Not on the STI, only the WRX's get that option to see oil temps. Doesn't really make sense to me, but I didn't design the displays. You'd think both cars would have it....
I believe it has to do with the oil temp sensor being included on the FA motor but not the EJ.
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Old 08-28-2018, 12:13 PM   #24
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Has Subaru provided any specifics on the piston changes? Still hypereutectic, I assume. Stronger/thicker ringlands?
Not to my knowledge, but someone did something of an analysis on iwsti that you may be interested in.: iwsti dot com/forums/2015-sti-discussion/316830-type-ra-vs-sti-engine-internals.html

cliff's notes--if memory serves: ringlands unchanged, crown slightly thicker, different piston supplier (with potentially different composition of alloys).
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Old 03-06-2019, 01:16 AM   #25
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Wouldn't worry about the engine. My friend has a stock 2005 STI that still runs great. Check your oil levels and don't skip oil changes...you'll be fine.
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