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The best article I've read on the web concerning 4-stroke engine break in, can be found here:


engine break in is very important, proper break in will help ensure long engine life.

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โˆ™ 2009-03-25 01:40:14
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Q: How important is it to break in a new engine?
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Related questions

Can synthetic oil be used in a new engine?

After the break in period it is not an issue.

How long does a reconditioned engine take to break in?

The myth is that it takes about 1000 miles of "babying" the new engine. Then change the engine oil again.

Can you use synthetic oil in a new engine?

For the first 1600 km's or 1000 miles on a new engine just use regular oil. The reason being is that you want MORE friction in the engine to help the parts wear properly for a good "break in", synthetic oil has such good lubrication properties that it can interfere with proper engine break in.

Does new car cannot go over speed of 100 until break in?

It is not the speed that will ruin a new car engine, it is too much heat. Do not drive fast or rev up the engine for more than a minute or two, then let it cool off. This is actually a good way to break in an engine.

What do you do if you break the flywheel installing new engine on traxxas revo RC car?

This might not help... Get a new one.

How do you properly break in a new 350 engine for a 1969 Chevelle?

If the engine has a flat tappet camshaft you will need to break in the cam first. Start the engine and run it between 2000 and 3500 RPM for 30 minutes, gently changing engine speed between 2000 and 3500. Do NOT let the engine idle while breaking in the cam!!!! If you encounter any problems during cam break-in, shut the engine off, address the problem, then resume break-in. Once the cam is broken in, Change the oil and filter, and simply drive it normally, but don't run it hard for at least 1,000 miles. After 1,000 miles, everything is pretty well seated and the important wear patterns have been established, so you can drive it any way you want.

Where can I find the engine codes for my new car?

Yes, it is very important for you to find out the correct engine code for your car. Honda specifically posts these engine codes for cars to help you with your new car.

What is actual meaning of green engine technology?

It is a slang term for a brand new or rebuilt engine. It is also used to describe the break in period of a rebuilt engine during which you take it easy on the engine for the first 500 to 1000 miles.

How do you break in a nitro engine?

Break it in as if it is a new engine start by setting all your carb needles back to factory settings, even a bit richer if possible as long as the engine stays running without flooding. heres a good guide to go by

Why do engine crankshafts break?

Engine crankshafts usually break when there is too much pressure on them. Some have flaws and may break under normal use.

Who or what is responsible for this cleanup?

Decomposers do this important job for an environment. Decomposers break down organisms that are no longer living. They break them down into nutrients that can be used again by new plants.

Why is it important to break down starch to glucose molecules?

it is important to break it

How important is buying the extended warranty with a new laptop computer?

You should always get it as they tend to break at the 2yr mark.

How much mileage before a new engine delivers it's full power?

My best guess will be the standard 500 mile break-in period.

Why does the turbine in a car engine break?

Yes, they can break or just wear out.

Who invented the make and break engine?

Joshua Andrews invented the make and break engine in 1726. he invented it to power a snowmobiel called a Yamaha bravo. its a 5.3L v8 256hp engine.

What is the best speed should you be traveling when breaking in the car engine?

Usually unders 55 or 60 mph and varied speeds. The speed of running in a new engine is really not important. The important thing is, never over rev the engine and never let the engine labour. If you avoid both of these then the engine should stay sound for many miles. modern cars don't need an elaberate break in period. Just don't be stupid and burn out alot or redline every time you shift. Drive like a sensible person for the first 15,000 miles or so. -if its diesel then run it hard. it makes the engine last longer BUT only on diesels, if its gas then take it easy but not granny style

Will a used motorcycle perform as well as a new motorcyle?

I believe every engine is different and there is no way to tell wheather or not a used engine is better than a new or vice versa. A new engine how ever you do have an advantage because there is no miles or wear and tare on the engine but that does not always guarentee it's not going to break down or have problems. Just like a used engine has a advantage or being broken in and the initial problems could be out of the way and running great and may even last longer than a new motorcycle you just never can tell its a buyer's beware market on i believe everything you buy wheather it's new or old.

What was the significance of the steam engine in the 19th century?

The steam engine was very significant in the 19th century. It allowed a new way for people to travel, and was important in the United States' society.Ê

Small block Chevy lifters not rotating.2nd new set?

That's usually caused by not following the break-in procedure. It's important to get the engine running quickly without cranking the starter much, and get it up to speed right away. If the cam has suffered wear from the lifters not rotating, it will need to be replaced.

Could a new timing chain cause piston rods to break from shaft?

on some engine designs when the timing slips or is wrong the valve train will hit the pistons. something has to break, the valves, pistons, or the rods will bend.

How many miles break in on engine with molly rings?

about 1000 for them to set. But for full break in about 2500

When should you flood the engine?

when you want to break it

How do you break an airplane?

A prooblem in the engine of a crash

How do you swap engine on Murray riding mower?

To swap an engine on a Murry riding mower, it is important to make sure that the new engine is the right match for the mower, by checking the model number. You also need to make sure that the bolt holes line up, so that it will fit safely. Remove the old engine, and then replace the new engine, tightening all the screws and bolts in the reverse order that you followed to remove the old engine.