Hachiroku ハチロク wrote:
> On Sat, 10 May 2008 08:30:50 -0700, jim beam wrote:
>
>> Jeff wrote:
>>> Hachiroku ハチロク wrote:
>>>> On Sat, 10 May 2008 00:19:20 -0600, Bow Wow wrote:
>>>>
>>>>> I was planning on taking my soon to take possession Highlander V6 on
a
>>>>> trip which will consist mostly of highway driving of about 3000mile
>>>>> drive
>>>>> and been told that that's not such a good idea because you don't
want
>>>>> to drive a brand new car on the highway for any extended amount if
you
>>>>> can help before the car's properly broken in.
>>>>>
>>>>> The seals, rings and the machine just needs to set in properly,
which
>>>>> happens during the break in period and before that, I was told you
>>>>> should
>>>>> avoid any long highway trip.
>>>>>
>>>>> What do you guys think? If this was your car, would you do it or
put
>>>>> off
>>>>> the trip until after the car's broken in properly? Thanks.
>>>> I'm old-school. I drive a car 1500 miles and then do the first oil
>>>> change.
>>>> Then I do the next one at 3000 miles, and every 3-3500 after that.
>>>>
>>>> I also had 3 cars go over 250,000 miles without burning oil.
>>>> Five-hundred miles is approx 8 hours. I would prbably go pretty easy
>>>> for the first 1,000 miles, secondary roads and short stretches on the
>>>> highway around cities. This will do two things; allow the machine to
>>>> run at something other than wide open, and force variations in load
and
>>>> speed like the manual says to do.
>>>>
>>>> It seems I can tell when a car was broken in properly or not. On cars
I
>>>> had had new, they don't tend to develop 'notches' at certain speeds.
By
>>>> this I mean, on cars other than ones I bought new, I can notice that
>>>> the car seems to hit a stride ~45-50 MPH, and another ~70 MPH. What I
>>>> assume is that the person that bought the car new had two driving
>>>> modes: secondary roads (45 MPH) and highway (70 MPH). I have noticed
>>>> this on a few used cars I have owned.
>>>>
>>>> On cars I bought new and broke in properly, there weren't any
>>>> 'notches', everything was fairly even across the range. You will hit
>>>> speeds and conditions on any car, no matter how it was broken
>>>> in due to engine and mechanical efficiencies. On most 4 cylinder
>>>> Toyotas I
>>>> have owned, they seem to hit their stride 70~75 MPH, since I assume
>>>> this is the engine's most efficient mode. I have noticed this on 4 or
5
>>>> Toyotas
>>>> I have owned. Always got the best economy at about 72 MPH in 5th
gear.
>>> How do you know that the speeds that the cars were driven at had
>>> anything to do with these "strides"? And why would driving a car a
>>> particular speed cause this?
>>>
>>> I think you don't know what you're talking about.
>>>
>>> From the owner's manual for a 2008 Pilot:
>>>
>>> "Help assure your vehicle’s future
>>> reliability and performance by paying extra attention to how you drive
>>> during the first 600 miles (1,000 km). During this period:
>>> Avoid full-throttle starts and rapid
>>> acceleration.
>>> Do not change the oil until the
>>> scheduled maintenance time.
>>> Avoid hard braking for the first
>>> 200 miles (300 km).
>>> Do not tow a trailer.
>>> You should also follow these
>>> recommendations with an
>>> overhauled or exchanged engine, or
>>> when the brakes are replaced."
>>>
>>> Note what the manual says about the first oil change.
>>>
>>>
>>>
>>>> Of course, with newer cars and a V6, things are different now, but I
>>>> would
>>>> still take it pretty easy for the first 1500 miles, and stop and have
>>>> the oil changed.
>>
>>
>> what??? read the manual??? no freakin' chance buddy! we're all going
to
>> have a retardation contest here on usenet and take the words of
nameless
>> idiots with our new multi-thousand dollar investments, not the experts
>> that researched, designed and manufactured the freakin' thing!
>>
>> imagine these guys in aerospace: "yeah, but this guy said those cracks
>> didn't matter".
>
> You have had how many cars >230,000 miles?
a few actually. 306k was my highest [verifiable] mileage. but wtf has
that got to do with inability to read manuals???
>
> Feh.
>
>
> Some things change, some things don't. Rings and cylinder walls are
still
> about the same as they were 20 years ago.
"about the same"??? you want to be imprecise so you can claim whatever
you want that way??? or are you saying "about" you don't actually know
the details??? [rhetorical]
it's untrue if you think there are no changes - there are small but
subtle changes to lip profiles that help with power and economy, and
there are improvements to honing processes giving better cylinder wall
finish, and quality.
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