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Unread 05-23-2010, 05:17 AM   #1
oldbanker
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Breaking In Liberty

I just bought a new 2010 Liberty Limited and could not find any breakin instructions in the owners manual. The salesman also was no help. From owning other new cars, usually there are defined instructions on speed restrictions, etc. for first 500-1000 miles. Any help would be appreciated.

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Unread 05-23-2010, 05:39 AM   #2
tjkj2002
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Well if you want to do it right keep the speed down(55mph max) for the 1st 500 miles,no towing or wheeling.Always allow the engine to reach normal operating temps before shutting off,very important as it "heat cycles" the internal parts.Keep the rpm's low,so no WOT(wide open throttle) starts and passes.

And the biggest thing is to change the oil/filter at 500miles.

Your also breaking in the diff gears,trans,and t-case(if 4wd) at the same time also and heat cycling the diff gears is a must for long life.
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Unread 05-23-2010, 05:19 PM   #3
Nitz240d
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Quote:
Originally Posted by tjkj2002 View Post
Well if you want to do it right keep the speed down(55mph max) for the 1st 500 miles,no towing or wheeling.Always allow the engine to reach normal operating temps before shutting off,very important as it "heat cycles" the internal parts.Keep the rpm's low,so no WOT(wide open throttle) starts and passes.

And the biggest thing is to change the oil/filter at 500miles.

Your also breaking in the diff gears,trans,and t-case(if 4wd) at the same time also and heat cycling the diff gears is a must for long life.
It's funny, I was wondering the same thing myself because there is no mention in the owners manual and my salesman didn't say anything about it either.

As you mentioned, I have always been told low rpm's, no WOT and 500-750 mile oil change.

-Erik
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Unread 05-23-2010, 06:34 PM   #4
daggo66
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I believe the 2010's came with an "owner's guide" and the full manual should be on a DVD. If not you can go to the Jeep website and download it. Here is the engine break-in information from the '08 manual. It should be the same.

A long break-in period is not required for the engine in
your new vehicle.
Drive moderately during the first 300 miles (500 km).
After the initial 60 miles (100 km), speeds up to 50 or 55
mph (80 or 90 km/h) are desirable.
While cruising, brief full-throttle acceleration, within the
limits of local traffic laws, contributes to a good break-in.
Wide-open throttle acceleration in low gear can be detrimental
and should be avoided.
The engine oil installed in the engine at the factory is a
high quality energy conserving type lubricant. Oil
changes should be consistent with anticipated climate
conditions under which vehicle operations will occur.
The recommended viscosity and quality grades are
shown in Section 7 of this manual. NON-DETERGENT
OR STRAIGHT MINERAL OILS MUST NEVER BE
USED.
A new engine may consume some oil during its first few
thousand miles (kilometers) of operation. This should be
considered as a normal part of the break-in and not
interpreted as an indication of difficulty.
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Unread 05-23-2010, 07:15 PM   #5
Nitz240d
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Quote:
Originally Posted by daggo66 View Post
I believe the 2010's came with an "owner's guide" and the full manual should be on a DVD. If not you can go to the Jeep website and download it. Here is the engine break-in information from the '08 manual. It should be the same.

A long break-in period is not required for the engine in
your new vehicle.
Drive moderately during the first 300 miles (500 km).
After the initial 60 miles (100 km), speeds up to 50 or 55
mph (80 or 90 km/h) are desirable.
While cruising, brief full-throttle acceleration, within the
limits of local traffic laws, contributes to a good break-in.
Wide-open throttle acceleration in low gear can be detrimental
and should be avoided.
The engine oil installed in the engine at the factory is a
high quality energy conserving type lubricant. Oil
changes should be consistent with anticipated climate
conditions under which vehicle operations will occur.
The recommended viscosity and quality grades are
shown in Section 7 of this manual. NON-DETERGENT
OR STRAIGHT MINERAL OILS MUST NEVER BE
USED.
A new engine may consume some oil during its first few
thousand miles (kilometers) of operation. This should be
considered as a normal part of the break-in and not
interpreted as an indication of difficulty.
So they're NOT recommending an oil change before 3,000 miles...interesting.

-Erik
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Unread 05-23-2010, 08:53 PM   #6
tjkj2002
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Quote:
Originally Posted by Nitz240d View Post
So they're NOT recommending an oil change before 3,000 miles...interesting.

-Erik
Ask any pro engine builder about when your 1st oil change should be,most will say 500miles and some will say as soon as 100miles.
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Unread 05-23-2010, 10:59 PM   #7
Nitz240d
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Quote:
Originally Posted by tjkj2002 View Post
Ask any pro engine builder about when your 1st oil change should be,most will say 500miles and some will say as soon as 100miles.
That's what I was always told and most manufacturers recommend it - that's why I'm surprised Jeep doesn't.

-Erik
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Unread 05-23-2010, 11:29 PM   #8
geene519
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with modern precision machining, a strick breakin procedure really isn't needed anymore. typically some moderate driving and not keeping a steady RPM for the first 500 miles is more than enough.
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Unread 05-23-2010, 11:37 PM   #9
Nitz240d
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For $40 or $50 for oil and a filter I think I'll stay on the safe side and change at 500.

-E
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Unread 06-08-2010, 06:14 PM   #10
GearGuy10
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Quote:
Originally Posted by Nitz240d View Post
So they're NOT recommending an oil change before 3,000 miles...interesting.

-Erik
If the 2010 manual is similar to the 2009, the oil changes are every 6,000 miles. Personally, I couldn't do it. I changed mine at 1k, 2k, 3k, 6k and 12k. Now I'll go every 6k with Mobil 1.
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