Date: Fri Jun 20 01:48:17 2008 Back to Contents
Author: Machele Kindle
Subject: Re: myth of oil change every 3,000 miles
My first husband and, sometimes me, commuted a LONG WAY to work (when I
worked between semesters). It was 180 miles each day for us and we
couldn't car pool often. So, needs to say, we did the 3 month limit of
the 3 months/3000 miles rule. That means we were changing every 11k
miles. We never had a problem.
Jerry DiMarco wrote:
> Sounds like a potential science fair project. I started changing
> oil every 3000 miles when I read a Consumer Reports survey about
> habits of car owners whose cars lasted the longest or something like
> that. Guess it's time to reconsider, and just in time since I'm
> getting tired of doing it twice a year...
> At 6/17/2008 09:29 AM, you wrote:
>> Read this in the yahoo news, concerning the myth of changing the oil
>> in a vehicle every 3,000 miles.
>> Idea for new experiment in the physics labs or something already
>> being done?
>> Because of the many external conditions and parameters that have to be
>> taken into account, calculating the precise maximum service interval
>> mathematical models alone is difficult. Now, Daimler AG has developed a
>> more direct and precise way to monitor oil quality directly on board a
>> Daimler uses a special sensor integrated into the oil circuit to monitor
>> engine oil directly. Oil doesn't wear out, but rather dirt and
>> cause oil to lose its ability to lubricate properly, dictating the need
>> for a change. Daimler uses the oil's "permittivity," that is, the
>> to polarize in response to the electric field. If the engine oil is
>> contaminated by water or soot particles, it polarizes to a greater
>> and its permittivity increases.
>> To evaluate the quality of the oil, permittivity is measured by applying
>> an AC potential between the interior and exterior pipes of an oil-filled
>> sensor to determine how well the oil transmits the applied electric
For in the end, we will conserve only what we love.
We will love only what we understand.
We will understand only what we are taught. - Baba Dioum
From firstname.lastname@example.org Fri Jun 20 01:48:17 2008