Who waited for the 3k miles before...?
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HuntRunner
New member
I did not drive mine hard for the first 500-1000 miles (excelleration, braking, etc.) but I drove it 75mph and have not had any problems. I have 12,000 on it now.
I can't imagine any harm in going over 75 mph assuming the engine RPM is well under 4,000. The big issue is over revving the engine. On the highway at 75 mph the engine is turning about 18-1900 rpm and at 85 mph is about 20-2200 rpm. Hardly a cause for concern. Now kick it out of OD into 4th (or 3rd) and run it at 4500-5500 and you have potential problems.
Just my thoughts.
Just my thoughts.
Good Times
New member
my break-in lasted about 500 miles of "conservative" driving. This meaning keeping my rpm varying between 0-4000. Nothing more than 4000 though. As for the freeway, I just tried to stay off it for the first 500 miles (best I could).
But now, these engines are soo much better than the old ones that you really don't even need to worry about break-in periods. It runs fine right off the lot.
But now, these engines are soo much better than the old ones that you really don't even need to worry about break-in periods. It runs fine right off the lot.
3k for a breakin, why is it car salesman don't have to know anything about selling vehicles but any other job you need training, I've had jewelers tell me more about my watch, guys that sell water softeners, refrigerators, washers and driers tell me more then any car salesman has, even hunters can tell you more about the guns and bows they use, to show you the complete lack of knowlege this car salesman at BMW who Im only dealing with cause he's friends with my father who worked for BMW for 10 plus years looked me staight in the face and said the M3 for 2004 had a 400hp V8, I even popped the hood and counted the spark plug wires and he still said it was a new engine configuration and that it was a V8.
After all that he got back to me and said, sorry that car does not have the V8 but it can be factory ordered with the V8, so I said order it, can't wait to see this car in a few months.
The other thing I was impressed with was the salespeople at Lexus telling me the GX had a aluminum engine, block and heads and then the parts guys agreeing.
After all that he got back to me and said, sorry that car does not have the V8 but it can be factory ordered with the V8, so I said order it, can't wait to see this car in a few months.
The other thing I was impressed with was the salespeople at Lexus telling me the GX had a aluminum engine, block and heads and then the parts guys agreeing.
The 4Runner did not really say anything specific on break in except for the no hard breaking for the 1st 300 miles and no towing for 800 or something like that, plus the vary your speed and no hard take offs.
I do believe in breaking the vehicle in properly, not just for the engine but other parts need the 1st initial 1000 miles or so to wear in, any part or gear that spins/turns against another part needs to wear in, the auto trans is full of little peaces with sand paper like texture that have to wear in, the front and rear end gears need a break in, the transfer case needs to wear in, every mechancal part that interlocks with another part has to wear in together.
If break in was not such a big deal why don't more people buy demos or manager specials that see triple digits or a constant redline before the vehicle even has 2 or 3 digits on the odometer
I generally follow what Nissans guidelines have been for vehicle break in or that of BMW, either way I was always told the break in is what sets your life long performance and fuel economy.
My Pathfinder with a 3.3L 170hp engine, I routinely got 24-26 mpg on the highway moving at 75mph, my most impressive gas mileage was getting 20mpg at a constant 90mph and I didn't even change the oil while other owners where not even touching 23mpg with manual hubs and synthetic oil through out the truck, was it the break in or a factory beast.
Then again how many people actually know about break in procedures, not many and to bad they just don't break them in at the factory, the M3's are broken in but they still require a 1200 miles breakin and they changing out the oil
I do believe in breaking the vehicle in properly, not just for the engine but other parts need the 1st initial 1000 miles or so to wear in, any part or gear that spins/turns against another part needs to wear in, the auto trans is full of little peaces with sand paper like texture that have to wear in, the front and rear end gears need a break in, the transfer case needs to wear in, every mechancal part that interlocks with another part has to wear in together.
If break in was not such a big deal why don't more people buy demos or manager specials that see triple digits or a constant redline before the vehicle even has 2 or 3 digits on the odometer
I generally follow what Nissans guidelines have been for vehicle break in or that of BMW, either way I was always told the break in is what sets your life long performance and fuel economy.
My Pathfinder with a 3.3L 170hp engine, I routinely got 24-26 mpg on the highway moving at 75mph, my most impressive gas mileage was getting 20mpg at a constant 90mph and I didn't even change the oil while other owners where not even touching 23mpg with manual hubs and synthetic oil through out the truck, was it the break in or a factory beast.
Then again how many people actually know about break in procedures, not many and to bad they just don't break them in at the factory, the M3's are broken in but they still require a 1200 miles breakin and they changing out the oil
Jim
New member
When a salesman tells you anything technical or about how to maintain your vehicle, RTFM or otherwise verify it. The 2004 manual says to avoid hard braking for the first 200 miles, no towing for the first 500 miles, and avoid jackrabbit starts and do not run "too long" at any one speed for the first 1000 miles - that's it
sharp4runr
New member
EDGE said:
I have to say that is one of the longest run-on sentences I have ever read... :arrow:
But I do agree with his point. Take the salesman's word with a grain of salt and rely more on what the manual says...
AsianPersuasion
New member
I'm still doing the 3k breaking in. I got over 75mph but I just drive it conservatively. No jackrabbit sarts, no hard braking. That's pretty hard with NYC driving...
Thai
Elite Member
Here's a little reading for everyone:
http://www.toyota-4runner.org/showthread.php?s=&threadid=183
Hope this helps.
http://www.toyota-4runner.org/showthread.php?s=&threadid=183
Hope this helps.
NoDak
Senior Member
ok taking a stab at this.
i normally do a 1500 mile break in using a modified owners manual recommendation.
1. vary my rpm from 2000-4000 rpm
2. no gas pedal to the floor take offs or passing
3. no hard braking
4. no towing
here is the shorthand version explanation
1. reason to vary the speed is to make sure the timing belt, etc. does not wear into set pattern
2. so the engine parts have a soft break in period and the valves, etc can seat properly
3. so the brakes pads, discs can be seated and cured properly
4. so no undue load it added to the engine (refer to 1)
i normally do a 1500 mile break in using a modified owners manual recommendation.
1. vary my rpm from 2000-4000 rpm
2. no gas pedal to the floor take offs or passing
3. no hard braking
4. no towing
here is the shorthand version explanation
1. reason to vary the speed is to make sure the timing belt, etc. does not wear into set pattern
2. so the engine parts have a soft break in period and the valves, etc can seat properly
3. so the brakes pads, discs can be seated and cured properly
4. so no undue load it added to the engine (refer to 1)
Iman74
New member
Jim said:
Yeah I hear you and everyone else. But keep in mind the only reason I was shopping for a new vehicle is my Passport had a problem that no one could figure out, and left me in some bad situations. So not only was I desparate to get a good deal, great SUV, but I also wanted to prevent harm of anykind to my new baby. But now she is a filthy beast and I love her just the same.
The real answer is that a breakin schedule can't hurt your 4Runner. Hard driving right off the lot might. So if you plan to keep the vehicle, follow some reasonable schedule. I know I did.
I was a mechanic in the 60's on rich people's Italian cars They had a very involved breakin schedule that included a hot re-torque of the head bolts at 1,000 miles and sometimes an oil change.
And if you listen to a salesman, you get what you deserve. The same could apply to a lot of service writers, too.
I was a mechanic in the 60's on rich people's Italian cars They had a very involved breakin schedule that included a hot re-torque of the head bolts at 1,000 miles and sometimes an oil change.
And if you listen to a salesman, you get what you deserve. The same could apply to a lot of service writers, too.
A break-in should be done but lets face it how many people buy cars and drive off and don't have a clue as to what a break-in is, several of my friends parents bought numerous new cars and after 50 miles drove them like they where out at the track, my friends father bought a new 98 SC Buick Rivera, both the father and 2 sons must have taken 10 friends out each and everytime just put the pedal to the floor, all before it even hit 100 miles
today that car has 100k or more and still runs like new, my other friend had a legend that the engine gave out at 140k, car looked mint but it had a hard life, just thinking of all the premature miles he put on that engine, cold start ups and the pedal to the floor.
Makes you wonder why some cars run for 200-300k plus and are still going and other blow up at 80 to 150k I guess it all depends how you take care of it to, break-in is good but if you don't change the oil break-in mean nothin.
Also it amazes me that certain rental cars are unbreakable, talk about being driven hard day in and out.
It all depends on how lucky you are with certain things
today that car has 100k or more and still runs like new, my other friend had a legend that the engine gave out at 140k, car looked mint but it had a hard life, just thinking of all the premature miles he put on that engine, cold start ups and the pedal to the floor.Makes you wonder why some cars run for 200-300k plus and are still going and other blow up at 80 to 150k I guess it all depends how you take care of it to, break-in is good but if you don't change the oil break-in mean nothin.
Also it amazes me that certain rental cars are unbreakable, talk about being driven hard day in and out.
It all depends on how lucky you are with certain things
My last 4Runner was a 1990 SR5 4wd. It was a dealer demo car and I drove the living crap out of it. I sold it in 2000 with 235,000 miles on it, still running strong. It may have had a hard life but it was meticulously maintained. I think its all about how you take car of your car.
