What happens if you floor the car a lot during break-in period?

 

nothing really.


some would say it's actually better to have some high engine load (in a controlled manner, like routine down shifts) such that the the piston ring seals more efficiently... these are short bursts (80% throttle) followed by like a good smooth drive. which is why you really shouldn't buy a car with any miles on it... or risk some idiot f-ing up your car before you. (google mototune)

what's bad for new cars is stop and go traffic...

I mean seriously. according to nissan; theyre system is so hardcore that they break in the car in a mere 27km. everything from engine seals to the brakes. i mean they do that and then dyno the car.

 

The engine will shatter into a million pieces!

 

Your car will accelerate a lot during break-in

 

Most cars today do not really need a long break in like in the old days. They are mostly broken in by the factory. Some say that an "aggressive" break in is best.

 

I wonder if you could provide a source for this. I would like to read up on it a bit more.

Thanks

 

You will have fun and any problems can be dumped on the next guy.

 

Just drive it like you stole it.

 

Break In Secrets--How To Break In New Motorcycle and Car Engines For More Power

here's the info. bike owners do this actually. from what I know the GT-R follows a very similar program before they ship it off. I mean the car is dyno'd using this process and then goes on a drive to break in the brakes and stuff, and then it goes to cleaning and ships out.

 

Great link. Thanks. I didn't think it was still on the internet.

I started doing this years ago with my bikes (last 10 at least) and
started doing it with my cars soon after. I highly recommend
several short interval oil changes with this method....ie, 100 miles
500 miles, 1K and then go synthetic and a normal OCI. Is it
labor intensive?....yes. Is it worth the effort? .....ABSOLUTELY!

Without exception, (Vtwins, flat 6s, V8s, V6s), I was able
to achieve stabilized wear metals in every oil analysis by
around 10K, vs the ususal 20-30K. It has worked so well
and so consistently that I don't even do oil analysis anymore.

I look at it like this....If I blow it up or damage something
(and that hasn't happened), it's brand new and under
warranty.

 

 

this is why it's pretty critical for any new car owner that wants to get the best out of their engines to have one delivered with 0 miles on the engine... I'm not 100% onboard with dealers that let you test drive the actual car you may buy... mainly cause if you're driving it, so are everyone else. and that first 100 miles are critical for this method. definitely a fan of demo vehicles and and getting a car with less than 20 miles on the engine. I think my current car was the only exception. The other 6 cars were 5 miles or less. (off the line, on the truck, off the truck, into the showroom.)

 

ha ha ha, wait, that's not true, right?

 

Actually, I understand a lot of 'break-in' programs are not for the engine, but for the transmission, and specifically for the differential. They just don't mention that in the owner's manual, and find it easier to just say 'do x, do y, do z, fool'