On 4/1/10 2:36 PM, in article
Here in Texas, the temp goes above 90 sometime in May and stays there until
October. That pretty much kills normal schedule here, at least in the
I think its interesting that Honda puts in the 90 degree clause, where
Nissan focuses on dust and freezing temps, and only talks about hot in terms
of stop-and-go driving in hot weather.
-- For my 2003 Civic in severe conditions, the interval then becomes
5k miles or six months.
-- I would have to see a citation to believe that most people drive in
severe conditions. I think Jim B is right that "normal" is a word that
Honda chose for its manuals with careful consideration.
-- What folks report about their maintenance minders (the ones that
use startups, temperatures, etc. as input for when to tell the driver
an oil change is needed) seems to support longer intervals.
-- One has to drive /mainly/ in one or more of the severe conditions
to justify the shorter interval. E.g. driving less than five miles per
trip or in freezing temperatures, less than 10 miles per trip.
It is an 'if, then' statement and as such, you must understand that it is
not 'nonsense'. The 'if' part may be false, though, rendering the
conclusion useless. I think we agree that, the claim that people need to
change their oil every 3,000 miles or on some time interval is nonsense
promoted by auto repair people.
I disagree that it is nonsense. In my 1984 AMC Eagle, those frequent oil
changes were needed. In my 2008 Ford Focus, a longer interval is needed.
The 3000 mi interval was based on good info. However, now it is based on
Good info based upon old technology (oil from 25 years ago and car
manufacturing from 25 years ago). Even without the 'greed' factor, the
technology has changed enough that the old rules simply should not apply.
...and for the people driving the 25+ year old cars, the 'topping off what
leaks out method' probably is as good as doing oil changes (though the
filter probably still needs to get changed).
Not to me, I take 'lots of stop and go traffic' to be like driving a cab
in NYC. I have never driven a car like that and don't know anyone who
has. I'm also curious which latitudes one has to live in to drive
consistently > 90F or below freezing. I never pull a trailer nor do I
ever go off road.
I would think that anyone living in a major city with a 45+ minute style
commute qualifies...and yes, that is a significant number of drivers. Of
course, 'lots of stop and go' is open to interpretation and maybe the
manufacturers intends for it to mean only cars that are driven for 8+ hours
per day under those conditions...but should the end user assume that is what
they meant or err on the side of caution if they have a daily rush-hour
Phoenix, Las Vegas, Los Angeles...millions of drivers deal with that 90+
temperature for months at a time.
Entire states like Wyoming and Wisconsin deal with temperatures
'consistently' below freezing for months at a time.
I used to have a 65-70 min commute. However, it didn't affect my
mileage. I took the train. ;-)
You can have 70 min commute, if you live far away, with mainly fast
moving highways, even into NYC (I knew one teacher with about a 75-min
commute from PA right into Harlem).
Dallas, Ft. Worth, Houston, El Paso, San Antonio & Austin. Many millions
of Texans driving in the heat.
It wasn't long ago that we went over 30 days in a row without getting
below 100 during the day and never getting below 80 at night. The car I
was driving at the time has no A/C. That was tough.
I will never state how often I change my oil, that is now strictly
classified information. ;-)
I'm one of those guys who believes in 3000 mile intervals because it
has always worked for me. Do I care if no one agrees with me, NO. Do
I care if I can extend it to 5000 or more miles, NO. Do I claim my
way is the only correct way, NO. In other words, you do what works
for you and I'll do the same.
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