What is the break-in period?

[momike]

My sales guy says 500 miles and keep it below 5000 RPM.

AI says 500 miles and keep it between two and 4000 RPM, vary the throttle, avoid wide open throttle, and don’t drive like a granny.

Anyone have any definitive informed opinion? He laughs as he asks that question on the forum.

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[cc1999]

I say hammer down on the way off the lot . LOL

Drive it like you stole it. LOL

Joking aside, I just would not tow with it till you get around 500 miles on it.

 

[skytrucker]

Being in my own break in period, I’ll tell you I sort of have the same question…

im just treating it fairly gently, not flooring it, but also not babying it too much, I like your “between 2-4000 rpm” suggestion. Using cruise control sparingly, not allowing it to sit at a constant rpm/speed too much, like I said, gentle, variable, not too aggressive….
I’m not doing donuts and burnouts yet either….that'll be soon though….

 

[jordantii]

Have a look at these



:

I'm doing a 500 mile no filter change tomorrow.

 

[noswttea4u]

Manual says:
"You need to break in new tires for approximately 300 mi (480 km). During this time, your vehicle may exhibit some unusual driving characteristics. Avoid driving too fast during the first 1,000 mi (1,600 km). Vary your speed frequently and change up through the gears early. Do not labor the engine. Do not tow during the first 1,000 mi (1,600 km)."

 

[Ron Quixote]

Manual says:
"You need to break in new tires for approximately 300 mi (480 km). During this time, your vehicle may exhibit some unusual driving characteristics. Avoid driving too fast during the first 1,000 mi (1,600 km). Vary your speed frequently and change up through the gears early. Do not labor the engine. Do not tow during the first 1,000 mi (1,600 km)."

That’s the right advice. Don’t hammer it. Don’t tow. Do vary your engine speed by driving under different conditions. It’s not rocket science. And does it really make a difference? Who knows, but it’s easy and might help so why not?

I also like to change the oil after the first thousand miles.

 

[Chuck2001]

The most important thing is to keep pressure in the engine.

Acceleration (gentle the first kms, but normal to medium when engine is hot)

Deceleration, let's the engine decelerate.

I prefer to put in manual to control the rpm and the deceleration part easier.

Under 100 miles, the majority is done and you can slowly put more pressure without going full turbo boost.

I suggest and oil change at 500 or around 1k

 

[Jason B]

I've had mine for a year and 16K miles. I have NEVER had it at 4000 RPM.

 

[daytoncarter]

I had a long highway drive home, so I had to vary my break-in. It seems WOT and towing is not recommended until 1,000 miles.


Here are the keys:
1. Do not lug the engine - how do you tell if you're lugging? Low RPM + high load like climbing hills.
2. Do not use full throttle
3. Vary RPMs, speed isn't the main factor, but RPMs are. I had a long highway drive so I just used the gears and switched between 5-10th varying RPMs from 4.2k-2k when cruising home.

 

[Cosmicjumperalex03]

Ill put my opinion out there, but ultimately its just an opinion so take that into account.

First 200 miles, don't do any prolonged WOT pulls, but high RPM is not problematic. Try to avoid short trips as well, make sure each time you drive it the vehicle completes a full warm up and cool down cycle (vehicle reaches full operating temperature and allow engine to sit after driving for 4 hours if possible).

Within the first 500 miles, try to vary the RPM as much as possible, avoid long highway drives with a constant RPM. In my opinion WOT pulls are not an issue.

All that being said, more important to longevity than the break in period is actually the oil maintenance. I always do my first oil change at 2,000 miles on the odometer. This allows for enough time for the various small shavings of metal to have been cleaned off of the bearing surfaces and the cylinders/pistons, but doesn't allow them to remain long enough in the oil to result in a problem.

Next oil change at 5,000 miles on the odometer (3,000 miles after the first oil change).

After that I change the oil every 5,000 miles.

In my opinion oil quality is the most important thing for longevity. As long as you change the oil early in the engines life, 2k and 3k miles, all the lubricated surfaces can seat properly and wear in as best as possible.

From there maintaining the oil quality with oil changes every 5k miles ensures no future damage due to the oil quality dropping off from extended milage.

My experience as a dealer tech is that we see two types of failures most commonly, either the customer extended their oil changes too far over the life of the vehicle and this results in sludge in the engine, which causes oil restriction in the engine meaning bearings are not fed oil as well as it would without the sludge, resulting in bearing failure. The other common failure we see is the engine was manufactured with some imperfection in a bearing or other internally lubricated surface and no amount of oil changes or maintenance will save the engine. Typically these types of failures are early in the engines life and are covered under warranty.

All that being said, we don't see many engine failures due to lack of maintenance or due to materials imperfection, most common engine issues we see are very specific component design issues on specific models as well as fluid leaks.

On early 2.3l rangers most common issues we see are front timing covers leaking engine oil (the sealing surface is very small and the crank case pressure is fairly high) and also EGR cooler coolant passage baffle failure resulting in coolant flowing into the exhaust and causing massive smoke from exhaust and low coolant level.

On the later 2.3l rangers (I think 25 model year and up) we have seen some with an issue where the new spark plug design has a materials failure where the end of the spark plug electrode snaps off at low milage and it bounces around in the cylinder until it gets stuck between the piston and cylinder wall scoring the cylinder wall, allowing oil in the cylinder, misfire, oil consumption, lack of compression and all of them we have seen so far have resulted in what is called a "low time in service" engine replacement. Basically if a vehicle has bottom end engine damage before 3 years/36,000 miles, we just replace the engine outright.

On 2.7l rangers honestly, they are so reliable, I can't even remember the last time we worked on one for an internal engine issue. Those things are insanely bullet proof.

I see way more issues with F-150's.... Ranger for the win.

 

[javelina]

Ill put my opinion out there, but ultimately its just an opinion so take that into account.

First 200 miles, don't do any prolonged WOT pulls, but high RPM is not problematic. Try to avoid short trips as well, make sure each time you drive it the vehicle completes a full warm up and cool down cycle (vehicle reaches full operating temperature and allow engine to sit after driving for 4 hours if possible).

Within the first 500 miles, try to vary the RPM as much as possible, avoid long highway drives with a constant RPM. In my opinion WOT pulls are not an issue.

All that being said, more important to longevity than the break in period is actually the oil maintenance. I always do my first oil change at 2,000 miles on the odometer. This allows for enough time for the various small shavings of metal to have been cleaned off of the bearing surfaces and the cylinders/pistons, but doesn't allow them to remain long enough in the oil to result in a problem.

Next oil change at 5,000 miles on the odometer (3,000 miles after the first oil change).

After that I change the oil every 5,000 miles.

In my opinion oil quality is the most important thing for longevity. As long as you change the oil early in the engines life, 2k and 3k miles, all the lubricated surfaces can seat properly and wear in as best as possible.

From there maintaining the oil quality with oil changes every 5k miles ensures no future damage due to the oil quality dropping off from extended milage.

My experience as a dealer tech is that we see two types of failures most commonly, either the customer extended their oil changes too far over the life of the vehicle and this results in sludge in the engine, which causes oil restriction in the engine meaning bearings are not fed oil as well as it would without the sludge, resulting in bearing failure. The other common failure we see is the engine was manufactured with some imperfection in a bearing or other internally lubricated surface and no amount of oil changes or maintenance will save the engine. Typically these types of failures are early in the engines life and are covered under warranty.

All that being said, we don't see many engine failures due to lack of maintenance or due to materials imperfection, most common engine issues we see are very specific component design issues on specific models as well as fluid leaks.

On early 2.3l rangers most common issues we see are front timing covers leaking engine oil (the sealing surface is very small and the crank case pressure is fairly high) and also EGR cooler coolant passage baffle failure resulting in coolant flowing into the exhaust and causing massive smoke from exhaust and low coolant level.

On the later 2.3l rangers (I think 25 model year and up) we have seen some with an issue where the new spark plug design has a materials failure where the end of the spark plug electrode snaps off at low milage and it bounces around in the cylinder until it gets stuck between the piston and cylinder wall scoring the cylinder wall, allowing oil in the cylinder, misfire, oil consumption, lack of compression and all of them we have seen so far have resulted in what is called a "low time in service" engine replacement. Basically if a vehicle has bottom end engine damage before 3 years/36,000 miles, we just replace the engine outright.

On 2.7l rangers honestly, they are so reliable, I can't even remember the last time we worked on one for an internal engine issue. Those things are insanely bullet proof.

I see way more issues with F-150's.... Ranger for the win.

oh my, that don't sound good. fingers crossed.

 

[momike]

Cross posting this per other comments: how do I know when it's warmed up?

https://www.ranger6g.com/forum/threads/temperature-gauges-when-is-it-warm.25783/

 

[jordantii]

For me I am interested in oil temp at 160 or above. To me that is warm. Modern turbo engines seem to run hotter than NA counterparts. I’m my race cars we would never see oil temps over 190. We could vary the temps of the oil flowing through the cooler via restrictors.

 

[av8r]

Thermal cycling is the most important aspect of a "break in". Once the engine has cycled from cold to operating temp and back 4-5 times, it's about as good as it'll get. When we built drag cars we'd assemble, test run, thermal cycle 3-4 times and run them. High load at mid RPM is still considered to be the best way to get things to "run in". Modern engines don't really need much in this regard. Don't tow heavy before 500 miles, then run it the way you like..

 

[Cosmicjumperalex03]

Cross posting this per other comments: how do I know when it's warmed up?

https://www.ranger6g.com/forum/threads/temperature-gauges-when-is-it-warm.25783/

Ford typically regards a warm up cycle as being run long enough for the thermostat to open, usually around 180 - 185 degrees coolant temperature. If both lower and upper radiator hoses are hot then you know the thermostat has opened and the vehicle is considered warm. They don't really regard oil temperature in the workshop manual or training literature as relevant to the engine being warm or not. Not saying its not a good indicator as well but that's how we get taught to track engine temperature, its entirely based around coolant temp.

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