How should you 'break-in' a new car?

Answer 1

Breaking-In a New Car Most manufacturers have recommendations in the handbooks.

You should start off treating the engine very gently i.e. gentle revs and never more than 1/4 throttle. Over time you gradually use more revs and more throttle until you eventually end up using the full range of the engine. It is important to eventually end up using all the power and rev range to wear harden various parts. It is also important that you do not keep to a single continuous speed or gear but vary your speed quite a bit during this time (a long highway journey is NOT a good break in if you just sit in Top Gear at a continuous speed). This is because things are still hardening up and you can wear a groove into them.

Modern engines break in relatively quickly, often 1000km, older designs took longer as the tolerances were not as precise. The first oil change is often a lot sooner than later ones as during break in rough edges from manufacturing will be worn off and end up in the oil.

Here is more advice from various contributors:

• Drive it gently. General rule is not to exceed 3000 - 3500 rpm. for the first 500 miles. It is also a good idea to be kind to it for the first 2000 miles.

• "Breaking in" your cars engine is an old myth, it is also bull. Rule #1 if you want your engine to last a long time, treat it gentle all the time, not just for the first 1000km.

• Break in is important. All engine bearings and cylinders, etc. must wear evenly and proper. Also, piston rings need to seat. Have you ever seen a new engine burn oil until it breaks in? Some piston ring take up to 5000 miles to fully seat or wear evenly to cylinder bore. Not following proper break in procedures could result in premature engine/parts failure.

• This depends whether you purchase or lease a car. With a purchase you should break a car in for the reasons and using the methods described before, ignoring the one comment about it being bull. If the vehicle is a lease you may skip the break-in period if you so wish. Since not breaking-in a car may result in improper wear of parts, or even engine failure, during the warranty period it will be covered, and a leased car will be returned to the dealer before the warranty period expires.

• You shouldn't just break-in your car if you are buying it. Even if you are leasing it you should. Do the next guy a favor. A very inconsiderate answer man. Besides some people lease it and then decide they like it and want to buy it, so I say, you should break it in anyway. No matter what.

• If you research on how to break-in a new engine on the web, most sites will tell you a procedure to break-in the piston rings (the only thing that matters).

• The proper way to break in an engine is to drive at 30 mph and accelerate to 50 mph. Do this to break in the engine the proper way. Do this the first 3000 miles or so.

• Manufactures are making engines with much higher tolerances today. Where cylinder clearances used to be in the thousands of an inch, now its in the ten thousands. Bores are rounder and straighter. There is know reason to baby a newer engine, it will actually hurt. You need cylinder pressure to drive the rings out onto the bore, which actually shaves the bore into a perfect fit. By babying it the rings will only rub and burnish the surface leaving a less then Ideal finish. So ... keep the revs below 4000 the first 300 miles, then drive it ... accelerate with meaning for the next 2500 miles and your all set. This is how all High Performance engines are broken in, and all engines today can be considered a high performance engine since they pull more power out then there predecessors ever did.

• Most modern car engines are broken in at the factory, before assembly. Therefore the old tradition of breaking in a new car doesn't apply anymore. Just drive as you normally would drive and treat the car the way you would treat anything else of value.

Answer 2

You should break in a new car according to the manufactures recommended method of doing so. Every car is different with different engines that may require a slightly different process to break it. To make a blanket statement about how to break in every car would be false as they are all a bit different. If you purchase a new car. You should get advice from the dealership in which you purchase the car on how to break it in according to the manufactures recommended steps.

Answer 3

Buying a brand-new car is an exciting thing. However, as tempting as it may be to peel out of the dealer's lot and go cruising down the highway, driving a new car this way may cause you significant problems down the road. For a new car engine, the focus of the break-in period is to allow the piston rings of the engine to settle tightly into the cylinder wall. This will ensure your car has the best possible fuel economy and provides you years of trouble-free service. Generally, drive your car gently for the first 1,000 miles (1,600 km) or so, and change the fluids frequently.

Drive no faster than 50 miles per hour (80 km/h). Most car manufacturers recommend that you avoid driving a new car at excess speeds for the first 100 to 500 miles (160 to 800 km). This prevents stress on the engine before the piston rings have fully settled.[2]

After the first 300 miles (480 km) or so, you're usually safe to drive your new car over 50 miles per hour (80 km/h). However, you may want to check your car's owner's manual to be sure. Never drive over the posted speed limit.

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Answer 4

you can break the window with somthing but really you shouldent brake it

Answer 5

no