When the 1964 Thunderbird came out one of the selling points was that
it had a recommended oil change interval of 6000 miles. The 3000 mile
oil change has been absurd for at least 40 years yet the marketers
have managed to keep it going.
I use Mobil One and change it once a year or 12,000 miles, whichever
On Tue, 27 Mar 2007 15:14:01 GMT, firstname.lastname@example.org wrote:
Our fleet people tried the "oil sample" route to determination when to
start worrying and found that by the time you found a problem thru oil
analysis it was too late for the typical vehicle. There may be some
special cases where it makes sense, but not for the typical light
fleet vehicle where you compare the cost of the $18 oil analysis
versus just changing the oil for $20. Even on most heavy stuff you
are running a big risk if your PM program depends on catching things
thru an oil analysis.
On Thu, 29 Mar 2007 15:10:52 -0500, "Steve Barker"
3K is simply absurd and a waste of time and resources. It's been
proven over and over again in fleets that for virtually any light
fleet usage the sweet spot is around 6000 miles with traditional oil.
But you go ahead and ignore what people responsible for hundreds of
vehicle worth millions of dollars have learned and keep on throwing
your time and money away.
On Fri, 30 Mar 2007 18:13:14 -0400, clare at snyder.on.ca wrote:
Sorry but you are mistaken. The 6000 mile change works fine for
either use with today's cars. Just as you are mired in the 60's with
your 3000 mile oil change you also are mired in the 60's as far as
cleanliness of engines. Back then with carbs and chokes and generally
rich running engines short trips were terrible on cars. Lots of
unburned fuel, water condensation and the like contaminating the oil.
Today's vehicles just don't contaminate the oil like that anymore. The
run CLEAN almost from the instant they are started and they stay that
way usually for the life of the vehicle because the pollution control
laws require them to run clean to past 100K or the manufacturer has to
pay the repair costs. It's very rare for the emissions systems to
malfunction anymore. Our fleet has 100s of vehicles, mostly domestic,
and engine or transmission problems are pretty rare. Of the 100 or so
vehicles I've been personally involved with in the past several years
I can't recall any that had an engine or transmission problem with the
exception of some Dodge trucks with a design defect causing them to go
out at 30K. Most run to over 150K+ and then get auctioned. The last
time I had a vehicle breakdown with any of our fleet domestics was
back in the 80s. The fact is, statistically the domestics are
exceptionally dependable and durable. Sadly, the media and clever
advertising has convinced people the imports are somehow better even
though I know many instances of people putting many thousands into
their relatively low mileage imports to keep them on the road. Most
people won't let facts get in the way of their opinions.
All of this is hype. Maybe it wont, maybe it will. The average driver runs
12,000-15,000 miles a year. If you do your own oil changes its about $15
change using a good filter like the GM Delco, Wix, NAPA Gold, or a
and a really good Dino oil like Kendal GT, or Valvaline Racing.
So your talking a lousy $30-$45 a year in savings. going to extended 6k oil
$45 sure sounds like cheap insurance to me. If you hit the dealer, mine
charges $22 for an oil
change and includes a decent vehicle check including a brake check with the
linings and rotors mic'd and the specs entered. I'm too damn old to crawl
around on the ground to save $5-10 doing it myself. And I have spot checked
the work, it's never been off, but then I have a good working relationship
built over 25 years with the dealership, both as a private customer, and as
a mechanic working for independent shops. And there in is the secret to any
good business relationship, long term.
On Tue, 03 Apr 2007 01:05:56 GMT, "Whitelightning"
It's insurance that buys you nothing. Why not change it every 1000
miles or every 500? Wouldn't that be cheap insurance? There is ZERO
value in changing it every 3000 miles, you certainly don't need your
brakes or anything else inspected that often. If you think you do
then present some FACTUAL BASIS for the selected interval, not just
"it seems like the right mileage to me". Has someone done a study
showing a statistically significant difference in the number of on the
road failures between those vehicle "inspected" every 3000 miles
compared to those inspected every 6000?
If you hit the dealer, mine
It's your money to waste but it's not good advice to anyone looking
for teh answer to the question "how often should I change my oil".
Actually, changing the oil more often will cause more wear and tear, I
In oil filters, there are tiny holes n the filter that eventually get
plugged with dirt. Until the holes are plugged, the filters will let more
dirt through than an old filter.
So the optimal time to change the oil is when it is needed, not before.
I base my desicion on one simple fact, I always get at least 300,000 miles
out of my vehicles.
87 S-10 Blazer with a 2.8 V-6, had 297,000 miles on it when one of my kids
totaled it. Engine idled with
25 psi hot. 3 generations drove that vehicle.
My 91 S-10 4.3 has 310,000 miles on it, idles with 30 psi hot and at highway
speed has 45 psi.
My work car is still a baby, she only has 100,000 miles on her but the gauge
reads 25 psi hot at idle,
and pegs the guage when shes wound out tight.
You are correct that brake linnings arent going to go out in 3,000 miles,
but wheel cylinders can start leaking,
axle seals can start leaking. And uneven pad wear can show up that soon..CV
boots can get torn. And as it doesnt cost me any extra to have those items
checked, why not? By the way the work car is only 30 months old. I cant
afford to be sitting on the side of the road with a break down, and if it
has to go in the shop that means I have to rent a car. As I cover about a
third of the state I live in, a break down on the road is a major
inconvience. It means renting a car while the its being repaired, and if it
takes more than a day, having to come back to pick it up, not to mention
depending on an unknown shop to fix it.
When I was turning wrenches for a living I did this all myself after hours,
but that provided me access to a lift. As I said, it just isnt worth my
time to drag everything out I need to do an oil change, and then have to get
rid of the waste when I can take it some where I know will do me right for
$22. So one Saturday a month it goes in for service, then it goes to a car
wash and gets detailed. Takes about 3 hours.
So like I said, its cheap insurance.
On Sat, 07 Apr 2007 14:33:06 GMT, "Whitelightning"
It's a waste of money. We drive lots of vehicles to over 250K and
send them to auction running like the day the left the factory and
that's with 6000 mile oil changes. These are driven all over the
state, some regularly off road out in the boonies. There simply is
ZERO evidence that more often oil changes provide ANY benefit
Why don't you change it every 1000 miles? You should buy as much cheap
insurance as you can get. Since there is no advantage to 3000 mile oil
changes versus 6000 mile changes, there is equally no advantage to 3000
mile changes versus 1000 mile changes, so you'll get the same benefit,
and waste even more money, which appears to be your goal.
On Thu, 29 Mar 2007 07:57:18 -0500, "Steve Barker"
Hardly. Non-synthetic tends to start breaking down between the 7000
to 10000 mile mark. Not worth the risk. For an extra $15 I double
the safe oil change interval and save myself half the work I would
otherwise do changing oil on 4 vehicles. One day each year they all
get their oil changed.
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