500 Mile Break-In
Thread Starter
Melting Slicks
Joined: Jan 2004
Posts: 2,246
Likes: 5
From: West Coast
500 Mile Break-In
The GM manual states that during the first 500 miles you can't go over 55MPH and no sustained engine speeds (high or low).
Here in Arizona the speed limit is 70-75 MPH. If you are doing 55 MPH then you will cause a traffic jam or an accident.
Is it better to keep the RPMs low than the actual MPH. I keep the RPMs BELOW 3500RPM and no hard starts. I kept fluctuating the speeds between 65-80MPH and the RPMS never went above 2400RPM.
Any input?
Here in Arizona the speed limit is 70-75 MPH. If you are doing 55 MPH then you will cause a traffic jam or an accident.
Is it better to keep the RPMs low than the actual MPH. I keep the RPMs BELOW 3500RPM and no hard starts. I kept fluctuating the speeds between 65-80MPH and the RPMS never went above 2400RPM.
Any input?
Safety Car
Joined: Sep 2001
Posts: 4,411
Likes: 1
From: Wilmington NC
Re: 500 Mile Break-In (pettrix)
The GM manual states that during the first 500 miles you can't go over 55MPH and no sustained engine speeds (high or low).
Here in Arizona the speed limit is 70-75 MPH. If you are doing 55 MPH then you will cause a traffic jam or an accident.
Is it better to keep the RPMs low than the actual MPH. I keep the RPMs BELOW 3500RPM and no hard starts. I kept fluctuating the speeds between 65-80MPH and the RPMS never went above 2400RPM.
Any input?
Here in Arizona the speed limit is 70-75 MPH. If you are doing 55 MPH then you will cause a traffic jam or an accident.
Is it better to keep the RPMs low than the actual MPH. I keep the RPMs BELOW 3500RPM and no hard starts. I kept fluctuating the speeds between 65-80MPH and the RPMS never went above 2400RPM.
Any input?
Melting Slicks
Joined: Nov 2003
Posts: 2,402
Likes: 3
From: Raymore Mo
Re: 500 Mile Break-In (Richin Chicago)
They just don't want you to take it off the show room floor and run the crap out of it. Use good judgement and once you hit the 500 miles, then run the crap out of it. :D :thumbs:
Team Owner
Joined: May 2003
Posts: 23,480
Likes: 9
From: East Meadow NY
St. Jude Donor '12
Re: 500 Mile Break-In (3RD-INF)
They just don't want you to take it off the show room floor and run the crap out of it. Use good judgement and once you hit the 500 miles, then run the crap out of it. :D :thumbs:
Chris
Le Mans Master
Joined: Dec 2000
Posts: 7,096
Likes: 153
From: "Atlanta" Ga.
Re: 500 Mile Break-In (chaase)
I just got to 450 miles and heck I tried like everything, but I had to get on it a little. I did some highway, some traffic, and let it idle on couple really ugly days when it had not been started for a week.
Nothing out ragious but what I would call normal driving for a car, 50 more miles and then I can drive it like a Vette :yesnod: :yesnod:
Nothing out ragious but what I would call normal driving for a car, 50 more miles and then I can drive it like a Vette :yesnod: :yesnod:
Melting Slicks
Joined: Jan 2000
Posts: 3,029
Likes: 1
From: Wichita KS
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Re: 500 Mile Break-In (pettrix)
The reason for not keeping the Engine at the same RPM is for seating the piston rings properly. The reason for not going over 55 MPH for 500 miles is for getting a good wear pattern on the Ring and Pinion gears.
I would try to adhere to this the best you can.
I would try to adhere to this the best you can.
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Re: 500 Mile Break-In (denali)
I had a similar problem since I picked my car up 350 miles from home. I ran it on back roads for the first couple of hundred miles and then took it easy on the highway. It was scary, but careful to adhere to the owner's manual.
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Drifting
Joined: Apr 2003
Posts: 1,764
Likes: 31
From: Fort Collins CO
Re: 500 Mile Break-In (Flyin'Brian)
The reason for not keeping the Engine at the same RPM is for seating the piston rings properly. The reason for not going over 55 MPH for 500 miles is for getting a good wear pattern on the Ring and Pinion gears.
I would try to adhere to this the best you can.
I would try to adhere to this the best you can.
Enjoy your car!
-J
80K and counting