New engine break in

[blazer_owner]

ive heard lots of ways about breaking in a motor , i was just wondering if anybody knows the right way to break in a motor

[millerwd]

don't run it a a constant RPM for the first 500 miles. depending on how expensive the enigine is change the oil/filter after 100 miles or 2 hours. Then at 500 hundred more or another 10 hours..

 

Just my opinion.

[Rookie]

If it's never been fire befor. prime the oil pump. set the valves get the timing close and fire it up. you need to let it run between 1500- 2500 rpm for 1/2 hour varing the rpms. During this time adjust the timing by had if need be to get it running correctly. after the break in period fire it back up reset the valves if needed set the timing correctly, shut it down and change the oil. after this its good to go they say not to give it full engine power for the first 500 miles (to let the rings seat.) At 500 miles change the oil again. i would also recommend a magnetic oil drain plug. dont be alarmed if you see fuzz on it . this is just ring shaving and so forth. then change the oil every 3000 miles just my .02

[awdvkd]

Start it up. Put the tune to it. DRIVE IT LIKE YOU STOLE IT. You have to generate some heat to get the rings to seat. It won't hurt it. It will be alot faster and dependable than one that is baby'ed through break in.

[facn8me]

If you bought a brand name high performance engine with dyno sheet the engine would have been run for a short time then hammered to get it's numbers then drained and shipped. All ready for the street/strip. Drive it like your gonna drive it. in my opinion

[ManyCamaroz]

I was taught by my uncle who was a Grand National Team (Today's Nextel cup) Car Owner to take it easy the first several hudred miles never maintaining the same rpm's for any length of time. Then drive it the way you plan on driving it.

 

He said that if you run it hard when breaking in the engine it would run hard, if you break it in easy it run's easy. Grew up with that in mind and treated my cars, trucks and motorcycles the same way and have never had a problem.

 

"Don't let off the gas until you smell sh*t and hear glass breaking"

[Black02Silverado]

Just a thought.

 

Every new vehicle we have owned we just drove it off the lot like we drove the trade in to the lot. Nothing special. Never any problems in any vehicle since I got my license back in 1980, No oil burning issues, no mechanical issues, nothing but great running vehicles. The longest we kept one was 128k miles but most were around 80k miles before trade in.

 

Technology has advanced greatly. Just don't see a need to do anything different when I get a new vehicle.

 

I would think if it was a problem then the dealers would deny claims on the basis that the owner didn't break in there vehicle properly, or at least try to say that. Think of the tons of vehicles that are sold every day. Is the average person as anal about their vehicles as we are. Don't think so. They just drive them. Heck some don't even know how to check their own oil. I just think if break in was a big deal it would be addressed right from the start when you purchase a new vehicle.

 

It might have been an issue in the old days but not today. Just my opinion.

[GMCSierra04]

The proper way is was told to break in any new engine was to do this: For about 30-60 miles total, begin accelerating from a rolling speed gradualy up to about 50mph. After getting up to that speed, manually downshift into a lower gear to get manifold vacuum at its highest. Repeat this process and you will properly break in the engine properly and have many problem free miles ahead of you. This is what I was told be a GM r&d engineer. When you accelerate lightly from the rolling speed up to 50mph, you are actually "lightly" sanding the cylinder walls and nocking off any imperfections that may be there. After your at about 50mph, shifting into a lower gear creating the high maifold vacuum actually will pull any debris out of the combustion chamber and send it out the exhaust. You can think of it as sanding down a piece of wood with a light grit sandpaper and then wiping/blowing the dust away. Im sure every manufacturer has there "special" way of breaking in their engines but its probably all the same.

[facn8me]

The proper way is was told to break in any new engine was to do this:  For about 30-60 miles total, begin accelerating from a rolling speed gradualy up to about 50mph.  After getting up to that speed, manually downshift into a lower gear to get manifold vacuum at its highest.  Repeat this process and you will properly break in the engine properly and have many problem free miles ahead of you.  This is what I was told be a GM r&d engineer.  When you accelerate lightly from the rolling speed up to 50mph, you are actually "lightly" sanding the cylinder walls and nocking off any imperfections that may be there.  After your at about 50mph, shifting into a lower gear creating the high maifold vacuum actually will pull any debris out of the combustion chamber and send it out the exhaust.  You can think of it as sanding down a piece of wood with a light grit sandpaper and then wiping/blowing the dust away.  Im sure every manufacturer has there "special" way of breaking in their engines but its probably all the same.

 

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Don't take this wrong,but there are way too many variables to consider if you drive to 50 mph then downshift. Gear ratio in the rear end would have the most dramatic effect on engine rpm plus choice of transmission. A 3speed auto trans with a 3000 rpm stall and 5.13 gears would put alot more rpm on an engine than a 4sp OD and 3.08 gears would. But I agree that 30 to 60 miles of fairly easy driving varying rpm is the way to go and by then the rings should have long seated.

[citydriver]

Check this out HOW TO BREAK IN AN ENGINE It was posted on a thread in this Forum back in June

[GMCSierra04]

Thats some good info on engines and the break in process!

[superbee]

Oil is too cheap. Change it early, change it often. Drive like a human being for the first 500 miles and then go play boy racer if you want. My .02