From: jim on


Steve Barker wrote:
>
> If you're not worried about the next owner, then there's no reason to change
> it at all.

That's like saying if you do not believe cigarettes are harmful you
might as well smoke 10,000 packs of cigarettes in one day instead of
taking a lifetime to do it.
In general, for the regular customer's of the car manufacturers
changing the oil anymore often than recommended will give them no
benefit at all. Never changing the oil will void the warranty and is
greatly increases the chance of it affecting the customer's pocketbook.
But yes, you mighty get away with it if you only keep the car for 50K
miles.

-jim

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From: Ed White on
On Mar 27, 1:44 pm, "Steve Barker" <ichasetra...(a)some.yahoo.com>
wrote:
> Not a mis-print, they just didn't read the whole thing. Like the severe
> conditions and the definition thereof.

Unscropulous oil supplier have abused the "severe service" requiremets
to try and convince naive consumers to have their oil changed more
often than necessary. Different vehicle manuacturers are trying to
fight the lies in different ways -

Toyota no longer differentiates between normal and severe service.
They just specify 5000 mile oil changes in the US (but longer
intervals are specified in Europe)

GM has installed oil life calculators in almost of their vehicels.
They calculate an oil change intervals based on engine operating
parameters (cold starts, etc).

Ford added a lot of wordage to their service schedules to try and
clarify when decreased oil change intervals are appropriate. Ford does
not consider normal stop and go driving as severe service, no matter
what Jiffy Lube would like for you to believe.

Literally millons of gallons of perfectly good oil is drained from
vehicles every year becasue the oil change industry has brain washed
Americans into following a 3000 mile oil change interval. Breaking
this bad habit is difficult.

The 3000 mile oil change interval recommendation has been around for
as long as I can remember (back to the 60's). Oil is better now,
engines are better now, yet the same old recommendations are pushed by
some groups. Fortunately I have a good mechanic who know this is
rubish.

Ed


From: Scott Dorsey on
Steve Barker <ichasetrains(a)some.yahoo.com> wrote:
>Yeah, and why do they say this? 'Cause the government tells them to. Its
>an EPA thing, not the fact that the engine still needs the oil changed every
>3000 miles.

It would strike me that the EPA would want you to change your oil _less_
often, so there would be less oil waste to dispose of.

It would strike me also that car manufacturers would want you to change your
oil less often too, because they want to sell you a new car as soon as
possible. It's not in their best interest that your engine last forever.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
From: Ed White on
On Mar 27, 3:08 pm, klu...(a)panix.com (Scott Dorsey) wrote:
> Steve Barker <ichasetra...(a)some.yahoo.com> wrote:
> >Yeah, and why do they say this? 'Cause the government tells them to. Its
> >an EPA thing, not the fact that the engine still needs the oil changed every
> >3000 miles.
>
> It would strike me that the EPA would want you to change your oil _less_
> often, so there would be less oil waste to dispose of.
>
> It would strike me also that car manufacturers would want you to change your
> oil less often too, because they want to sell you a new car as soon as
> possible. It's not in their best interest that your engine last forever.
> --scott


Conversely, in who's interest is it to have you change your oil
frequently? Even vehicle manufacturer's get profits from oil changes
when OE filters and oil are used. If anything, vehicle manufacturers
have the incentive to increase profits by specifying more frequent oil
changes. Very few new car buyers drive cars to the point that the
engine fails. I have yet to sell or trade a vehicle with a bad engine.
If you are looking for an oil change conspiracy, look toward Jiffy
Lube, not Ford, or Toyota, or GM.

Ed

From: jim on


Ed White wrote:

> The 3000 mile oil change interval recommendation has been around for
> as long as I can remember (back to the 60's). Oil is better now,
> engines are better now, yet the same old recommendations are pushed by
> some groups.

Yes you are absolutely correct. In the 60's the 3000 mile oil change
interval ensured that the vehicle would make it through the warranty
period. Today on most vehicles the benefits of changing oil every 3000
miles won't show up until 200,000 or 300,000 miles. So the question
really boils down to -> Are you planning on keeping the vehicle that
long?

-jim

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