What did you do when you hit the 1000 miles mark?

[djmm]

I follow the 4k rpm guideline as the manual actually says that.

After break in, if I put it at 7k, I'll probably never hear that rev limiter beep. Maybe I'll put it at 6k so that I can still hear it occasionally.

[Chattanooga FR-S]

Originally Posted by djmm

I follow the 4k rpm guideline as the manual actually says that.

After break in, if I put it at 7k, I'll probably never hear that rev limiter beep. Maybe I'll put it at 6k so that I can still hear it occasionally.

^ This.

I figure I spent my money on this as my daily driver, something I plan on keeping for at least 10 years, so I'd rather follow the manual just to make sure it didn't come back to bite me several years from now.

If it also gave me time to get used to the car's power, handling, etc., then that's a bonus. And no, I do not always follow every rule/guideline/law/etc., but I probably stay on the more cautious side most of the time. Even with that, I still enjoy this car every time I see it or drive it, still drive it fast and twisty sometimes, and I don't feel like I really lost out on much of anything by following the manual for the first 1k miles. After all, it was only a couple weeks.

[extrashaky]

A couple of things to consider:

While new engines are manufactured to better tolerances and with better materials than they once were, there is still a period in which the engine is being broken in, as evidenced by the metal particles you will find in the oil on your first oil change. This is a period when all the parts are wearing against each other to find their fit as they flex, expand and contract. An engine cannot be manufactured such that the metal does not change at all during the break-in period. Break-in is also a period when the zinc and phosphorus in the oil are bonding with the metal to help create hard, slick surfaces on the wear parts. While there doesn't seem to be as big a reason to baby these engines, they don't come from the factory the same as they are after a few thousand miles.

What's more important than limiting your revs is the break-in suggestion that you vary the load on the engine and avoid using cruise control. Driving along using the cruise control breaks the engine in at a single load and will cause the rings to seat for that load only. You want the cylinder to initially wear in a tapered shape so that the rings seat properly all the way through the stroke, but using cruise extensively during break in tends to create more wear at the top and bottom and less at the middle, so that the rings never really seat quite right throughout the stroke.

[CBR600RR]

drove to 1001 miles and beyond

[J_kennington]

Originally Posted by extrashaky

A couple of things to consider:

While new engines are manufactured to better tolerances and with better materials than they once were, there is still a period in which the engine is being broken in, as evidenced by the metal particles you will find in the oil on your first oil change. This is a period when all the parts are wearing against each other to find their fit as they flex, expand and contract. An engine cannot be manufactured such that the metal does not change at all during the break-in period. Break-in is also a period when the zinc and phosphorus in the oil are bonding with the metal to help create hard, slick surfaces on the wear parts. While there doesn't seem to be as big a reason to baby these engines, they don't come from the factory the same as they are after a few thousand miles.

What's more important than limiting your revs is the break-in suggestion that you vary the load on the engine and avoid using cruise control. Driving along using the cruise control breaks the engine in at a single load and will cause the rings to seat for that load only. You want the cylinder to initially wear in a tapered shape so that the rings seat properly all the way through the stroke, but using cruise extensively during break in tends to create more wear at the top and bottom and less at the middle, so that the rings never really seat quite right throughout the stroke.

So, by that. Everyone who kept the car below x revs. Improperly "broke in" the motor. Rings are only seated up to 4k(I believe this was the magic number listed). So, anything above 4k will cause wear and tear after the "1k break in".

And yes, my car hit red line, drove all gears, hit every rpm. I'm a believer that you drive a car the same way you intend to for its life. Has worked on every motor I have ever rebuilt/bought new. From crates to 200k rebuilds.

[phobos512]

These days break-in has more to do with liability (hey, we told the owner to take it easy, it's not our fault he wrapped his car around a tree because he didn't know how to drive it yet) than with mechanicals.

[djmm]

Originally Posted by Chattanooga FR-S

^ This.

I figure I spent my money on this as my daily driver, something I plan on keeping for at least 10 years, so I'd rather follow the manual just to make sure it didn't come back to bite me several years from now.

If it also gave me time to get used to the car's power, handling, etc., then that's a bonus. And no, I do not always follow every rule/guideline/law/etc., but I probably stay on the more cautious side most of the time. Even with that, I still enjoy this car every time I see it or drive it, still drive it fast and twisty sometimes, and I don't feel like I really lost out on much of anything by following the manual for the first 1k miles. After all, it was only a couple weeks.

Yeah especially here in Australia cars are much more expensive than in US, I thought what is a couple of months driving conservatively - at least you have peace of mind knowing that you follow what the manual says. I also plan to keep the car for a long time that's why I try not to abuse the car.

But I don't baby it either (or else what's the point of buying the car) - only plans to every now and then to rev it hard when I feel like it and when the road condition is safe.

[extrashaky]

Originally Posted by J_kennington

So, by that. Everyone who kept the car below x revs. Improperly "broke in" the motor.

Nope. Didn't say that. I wound mine out before I even had 50 miles on it.

I think Toyota/Subaru know their customers are not going to stay below 4000 RPM. What you don't want during the break-in period is constant abuse of the engine. This guideline gives you enough load on the engine to properly seat everything without abusing it while the surfaces haven't set up.

[Xerious]

I took this picture

[86-tundra]

I've still yet to see any solid evidence indicating something broke due to driving hard in the break in period. The only real way to tell would be to drive 2 identical cars the exact same way after 1k miles, but hoon one and drive one like a grandma for the first thousand miles.

I dunno how many times I hit redline on the way back from the dealership.. it would probably make most of you cringe

[travisb]

I pulled over a took a picture.


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[bcj]

Two week roadtrip. Passes and canyons.

[ftc~brz]

what did I do at 1k?

Turboed the snot out of it....

muaaahahahahaha

[continuecrushing]

dropped a couple gears and hit redline on the freeway