Does the user manual recommend a break in period for the g37?

 

Yes 1200 miles

 

This is in the owners manual as well.

 

That's got nothing to do with the initial break-in period.

 

What's the recommended driving behavior during the 1200 miles? I know for my last car it was <5,000 RPM and no sudden stops (for the rotors) for the first 300 miles.

Picking up the new hotness tomorrow at lunch. Hell yeah.

 

I decided on a hard break-in. Drive it like I normally do. I asked multiple people and researched well. I vary the RPM's as well. No long trip at the same speed. For anyone that cares, I have already gotten mine up to 120 (with ease). So many people are eager to race me already. I ran against a BMW 7 series today as well. I have not floored it yet and don't intend to until at least 500 miles. After my first oil change. Than I will prob ease into it.

Also, when I was driving home from the dealership as soon as i got it, I nearly got pulled over by an undercover cop. I kinda punched it a little just for fun. Couldnt resist.

 

What's the difference between a normal slow break-in and a hard break-in? well other than the obvious fact you don't drive it as hard as the other. I mean the results? a hard break in results in what? I've only owned one car previously ('98 accord coupe) and i adhered to the break in for like 800 miles but after that, drove pretty regularly.

 

It is a massive debate that no one really know the results to. I have never broken in a car before. I decided on the hard break-in due to more street-car types have recommended to me. A hard break-in is supposed to build a better platform for higher horsepower and less leaks in your engine later on.

Read this:
http://www.mototuneusa.com/break_in_secrets.htm

 

The articule seems to be about 4-stroke motorcycle engines, i wonder if it's different on the nissan 3.7L engines...

On some TSX Forum, they said to just not redline it and vary the RPMs for the first 500 miles or so, then you can drive it regularly as long as you're not pushing it, while still varying the RPMs.

 

as you stated this article pertains to motorscycles not cars. Its a big debate from people who track their bikes and what is the best way of breaking in the motor for peak power for the street and track. This does not apply to cars. I have seen many cars have damage to the motor from people using break in methods like this one. the problem is you dont give the motor any time to seat the everything. all the seals and piston rings. By doing this you risk having blow back with oil getting passed the piston rings. The simple and best idea is to follow what the dealer states for the time frame on a car. there will always be the bebate of changing oil too oil or switching to synthetic too early.

 

Damn, i'm going to have a tough time getting to 1k miles haha

 

I have always broken in my cars hard, no problems yet.

 

Its not a matter of having problems. Can doing a hard break in cause problems of course. I have been building motors for a long time in my shop and I have dynoed many cars that were broke in with various techniqes almost 99% of the time the cars that are broken in per specs make more power then the motors that were run in hard. so while you running your car hard may not cost you any damage in the long run it will cost you hp...

 

the first 2000 miles or so I was very gentle. Got on it a tad but nothing too wild. I must say after 3250 or so it felt like it got a tad faster. Its now at 3600 miles and I am happy i was gentle with her during the first few weeks. Now she's an angel to drive.

Love it!

 

The engine definitely makes more power now after 1200 miles than it did with 5. Now that it is over 1200, I am not going to start beating on it, I am just going to use more of the RPM space. The car has so much power it doesn't require hard driving in normal situations, like the daily commute. I can definitely feel how flat and wide that torque curve is. At any RPM in any gear if you press on the accelerator, you get a nice push back in the seat.