Breakin miles

[warrior]

My 22 just arrived at the dealership, 7 long months of waiting. I've committed to a Jeep event this weekend which I would need to tow. Opinions on break in period?

 

[housecat]

Manual states 1k IIRC. Regardless, mine's going into sport mode, baja exhaust as soon as I get the keys.

 

[smurfslayer]

Modern engines don’t have the same iron clad rules as “the good old days” whereby you had to baby the vehicle for 500-1000 miles, but that said it’s not going to hurt to do it.

The big point they make now is to vary the rpms, and not just plod away at 1200 rpms in 10th gear for 1000 miles.

If you’re planning on towing... Yeah, I’d personally put that off until after the break-in, the same way I would be drag racing or auto crossing or open tracking a vehicle right away.

 

[BalorGrayJax]

I can tell you that I have 3498.7 miles after 60 days of ownership TO THE DAY. And from day 1.. its been sport mode, cupcakes and rainbows.

 

[SurfRaptor]

I have to drive my 22 in a few weeks (hopefully) from east coast to west coast. Its about 3,000 give or take. I'll try to go easy on it the first 1000 miles as per owners manual but after that I plan on getting on it a little bit.

Towing or drag racing I would think is the worst for any type of new vehicle.

 

[FordTechOne]

Owners manual specifically states not to tow in the first 1,000 miles of break-in. The engine is considered fully “broken-in” at 10,000 miles. If it was a couple of jet skis that would be one thing, but a Jeep is definitely going to put a significant load on the powertrain.

Here’s the Owner’s Manual excerpt:

BREAKING-IN
Your vehicle requires a break-in period. For the first 1,000 mi (1,600 km), avoid driving at high speeds, heavy braking, aggressive shifting or using your vehicle to tow. During this time, your vehicle may exhibit some unusual driving characteristic

 

[warrior]

Thank you

 

[sammy134]

I can tell you that I have 3498.7 miles after 60 days of ownership TO THE DAY. And from day 1.. its been sport mode, cupcakes and rainbows.

Same with me - permanent sport mode. But I only started that after like 4000 km. Just hit 17000km on mine. Sport mode is the only way to drive this thing.

 

[Donovan]

Break in miles...

Duck is that? If you're not first, your ducking last.

 

[AutoXRacer]

Owners manual specifically states not to tow in the first 1,000 miles of break-in. The engine is considered fully “broken-in” at 10,000 miles. If it was a couple of jet skis that would be one thing, but a Jeep is definitely going to put a significant load on the powertrain.

Here’s the Owner’s Manual excerpt:

BREAKING-IN
Your vehicle requires a break-in period. For the first 1,000 mi (1,600 km), avoid driving at high speeds, heavy braking, aggressive shifting or using your vehicle to tow. During this time, your vehicle may exhibit some unusual driving characteristic

I'll play an engineering lawyer...

That excerpt if you read it carefully says nothing about the motor... It's all related to brakes, transmission, and axles.

Obviously you don't want to "race" nor tow heavy loads as that will strain your transmission, axles, and brakes.

I read that excerpt and the first thing that comes to mind is breaking in a new clutch, brakes, and transmission. All of which requires a "soft and progressive" break in to allow the parts to bed in.

From my understanding, modern engines don't really need to be broken-in.
You don't want to redline the motor either as this glazes or polishes the cylinder walls when the rings and cylinder walls are trying to wear themselves in....bed in similar to clutches and brakes (sort of).

The key to a break in is like others have mentioned varying speeds, varying loads, etc. And heat cycles...get that engine hot, then let it completely cool off (like fully cold not warm from a 1 hour pit stop)

With my Raptor I picked up last Thursday....I didn't want to "race" the motor... but damn sales guy and the damn truck peer pressured me . Lol

I did a quick 3-4 shift bust...
But it's hard to drive this vehicle slow, conservatively, restrained....

Damn exhaust and pull feels so good!!

You can have fun.... just be mindful of letting all the parts break-in (bed in) before going crazy and towing a Jeep... lol (traded in my 2016 Hard Rock Unlimited for the Raptor)