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I did the same thing and it makes sense. It takes time for the rings, rocker arms, lifters etc. to wear the slight high spots and lap in! Also the trans and rear end gears. I drove home and used 4th gear and all three overdrives (5th, 6th and 7th) to vary the engine speed. Fun to do.
We just bought a BMW SUV and it limits the I6 to 4500 rpm for 1200 miles. Then it says gradually increase until you reach the 7000 rpm red line. Pretty sophisticated DI engine (double over head cams, 4 valves per cylinder and twin turbos -300 hp for 3 liters. That would be equivalent to 620 hp if 6.2 liters) and no doubt it has been machined to very tight tolerances.
The engineers/designers actually do know something about engines and drive trains.
Finished the day at 690 miles total. Nothing like a road trip to Nashville for work to break in the car. I took an alternate route up their to avoid highway speeds and then took time to drive around Nashville.
I have a little over 400 miles on our car. When driving on expressway without the cruise on and in tour mode, the engine switches to V4 quickly and often. Is there any damage that can occur being in V4 this early in the break-in?
My thought also. Why would they let us take the car from the museum, on the interstate many miles from home, if there was a concern.
they aren't "letting us". You choose to drive the interstate. I bought mine in Ohio and drove it home to Florida. The car never seen an interstate until we got down to Georgia. Drove all secondary roads until then which let me learn much more about my new car and appreciate my new car than driving an interstate would have. And all "broken in" within factory recommendations.
I have a little over 400 miles on our car. When driving on expressway without the cruise on and in tour mode, the engine switches to V4 quickly and often. Is there any damage that can occur being in V4 this early in the break-in?
Good question. I noticed this as well although I was constantly dropping gears and that takes it out of V4 mode.
You would think if something 'bad' could happen than V4 mode would be turned off until after the 500 mile break in period
Having owned 10 Vettes, 2 Ferraris and 3 Porsches, I have researched this topic extensively. Some of the folks that I spoke to include:
A buddy who is one of less than 24 Master Ferrari Mechanics in North America who works for Ferrari, owns a Ferrari and a C6 Z06.
Probably the most respected Porsche mechanic (35 years and still going strong) here in So Cal.
The head one of the Porsche district office out here.
The head of service for my local Porsche dealer who is a Porsche owner and considered a Porsche "genius"
The head Corvette mechanic at one of the dealers out here in So Cal who has over 20 years of Corvette experience.
The head of the local Corvette district office.
They all say the same thing....not driving over a certain rpm until hitting a certain mileage (500 for Corvette, 2000 for Porsche, 0 for Ferrari) is just crap. Furthermore, an engine will perform better and have less problems if that procedure is ignored. The key is oil temperture. DO NOT drive over 3000-4000 rpms in any gear until the oil warms up to about 160-170 degrees. Once the oil is warm, drive the hell out of the car. And this rule is not just for the first X number of miles, but for always. It does make sense with a new car not to cruise in a particular gear at a particular speed for a long period of time, and it also makes sense to ease onto the brakes at first. However, these modern engines do not need a brake in period. They are all run up to redline at the factory.
I have never had an engine problem with any of my cars. I put almost 20K miles a year on a car and they run like new forever. So forget the brake in period when it comes to max rpms.
Having owned 10 Vettes, 2 Ferraris and 3 Porsches, I have researched this topic extensively. Some of the folks that I spoke to include:
A buddy who is one of less than 24 Master Ferrari Mechanics in North America who works for Ferrari, owns a Ferrari and a C6 Z06.
Probably the most respected Porsche mechanic (35 years and still going strong) here in So Cal.
The head one of the Porsche district office out here.
The head of service for my local Porsche dealer who is a Porsche owner and considered a Porsche "genius"
The head Corvette mechanic at one of the dealers out here in So Cal who has over 20 years of Corvette experience.
The head of the local Corvette district office.
They all say the same thing....not driving over a certain rpm until hitting a certain mileage (500 for Corvette, 2000 for Porsche, 0 for Ferrari) is just crap. Furthermore, an engine will perform better and have less problems if that procedure is ignored. The key is oil temperture. DO NOT drive over 3000-4000 rpms in any gear until the oil warms up to about 160-170 degrees. Once the oil is warm, drive the hell out of the car. And this rule is not just for the first X number of miles, but for always. It does make sense with a new car not to cruise in a particular gear at a particular speed for a long period of time, and it also makes sense to ease onto the brakes at first. However, these modern engines do not need a brake in period. They are all run up to redline at the factory.
I have never had an engine problem with any of my cars. I put almost 20K miles a year on a car and they run like new forever. So forget the brake in period when it comes to max rpms.
On the other hand, I've owned over 24 brand new cars. Broken all in easy for the first 500 miles, never a problem.
We had an 1100 mile drive home from Museum delivery with no problems. We drove interstates when possible. I did my best to vary the speed and keep well below 4000 rpms. It was very cool to see the yellow line on the tach drop back at 500 miles. Someone referred to it as break in but it does the same thing when the engine is cold. We had a fabulous drive home and much to my surprise averaged 28 mpg's. Haven't touched that now that I'm home and doing mixed driving. This is one incredible car!
Having owned 10 Vettes, 2 Ferraris and 3 Porsches, I have researched this topic extensively. Some of the folks that I spoke to include:
A buddy who is one of less than 24 Master Ferrari Mechanics in North America who works for Ferrari, owns a Ferrari and a C6 Z06.
Probably the most respected Porsche mechanic (35 years and still going strong) here in So Cal.
The head one of the Porsche district office out here.
The head of service for my local Porsche dealer who is a Porsche owner and considered a Porsche "genius"
The head Corvette mechanic at one of the dealers out here in So Cal who has over 20 years of Corvette experience.
The head of the local Corvette district office.
They all say the same thing....not driving over a certain rpm until hitting a certain mileage (500 for Corvette, 2000 for Porsche, 0 for Ferrari) is just crap. Furthermore, an engine will perform better and have less problems if that procedure is ignored. The key is oil temperture. DO NOT drive over 3000-4000 rpms in any gear until the oil warms up to about 160-170 degrees. Once the oil is warm, drive the hell out of the car. And this rule is not just for the first X number of miles, but for always. It does make sense with a new car not to cruise in a particular gear at a particular speed for a long period of time, and it also makes sense to ease onto the brakes at first. However, these modern engines do not need a brake in period. They are all run up to redline at the factory.
I have never had an engine problem with any of my cars. I put almost 20K miles a year on a car and they run like new forever. So forget the brake in period when it comes to max rpms.
I've heard the break-in period is less important for a modern engine, and more for the sake of the trans gear sets, clutch and rear diff.
Here's a little known fact that eludes a lot of supposed car people who are not engineers: it's for the entire drive train and that includes the engine.
Because if you don't, GM can use it as an excuse to void warranty claims.
that's reaching a bit...there are no "warranty police"....
only if you drag race/tracked it all for the first weekend would they do something like that...and bragged about all over facebook....and then it self destructed...