for the guys that are into recreational oil changing...

so fix the damned thing! that's not a function of temperature, that's a
function of excess fuel.

that's a bullshit underinformed differentiation. all modern motor oils
are detergent. it's the detergent that's hygroscopic, so you can't
avoid it.

besides, synthetics flow better when cold, thus they are a better
choice, not worse.

 

and there we have it folks - always check this stuff.

oils, especially conventionals, break down and start to lose their
ability to hold contaminants in suspension after a while - mostly as a
function of time and temperature. conventionals more quickly than
synthetics. this is why you /should/ check and change your oil.

but with monitoring and use of quality lubricants, you can safely use
significantly extended service intervals. i eat my own dogfood:

http://www.flickr.com/photos/38636024@N00/4291579733/

 

quoth the expert in brainwashing, "awareness", "concern" and assisting
people in their "informed decisions"...

 

On 04/02/2010 07:47 AM, ACAR wrote:

that statement is worth significant examination: "sludge", any engine,
is an oil problem, not mechanical. if toyota had been sold a job lot of
defective oil or if iffy-lube were being more ruthlessly inattentive
than normal, that would indeed cause the problem.

 

not so - modern cars, at least in comparison with those of the 70's &
80's, are significantly heavier. a modern toyota or honda is
600-1000lbs heavier than their counterparts of 20 years ago. that's why
increasingly efficient and well managed engines are producing the same
mileage numbers as 80's cars, and in some cases, lower.

of course, washington being what it is, the oil industry has absolutely
no lobbying influence whatsoever on "safety" and the relentless pursuit
of heavier vehicles...

 

no, they're idiots. the clueless can be educated. the idiots, never so.

 

eh??? have you any idea how long it takes to get a drug approved? how
much testing is involved? [rhetorical - because you clearly don't.]

no, tests provide proof. inability to pay attention to that proof is
idiocy.

yeah, i'm the guy that makes shit happen. you're the idiot that just
stands about with your thumb up your ass bitching about stuff you don't
understand.

 

fresh oil. even 90% fresh oil [a low dilution rate] is
indistinguishable in performance from 100%.

 

you "disagree" with the facts?????? where can we find your contrary
research published?

 

on my civic & crx, i've been using the st3593a filter from woolmort.
made here in the u.s. by champion labs, the same people that make
filters for bosch and mobil labels.

they claim efficiency like this:
http://i43.tinypic.com/2kg0mv.jpg

this is my 190k mile civic engine using one of these filters for 20k miles.
http://www.flickr.com/photos/38636024@N00/4291579733/

 

filters help, but they're not the only thing - oil stability and
chemistry is important too.

 

generally, it's not if you leave the motor to stand for an hour before
you spin the filter off. try this yourself.

 

amen, brother.

 

with conventional oil....

 

he doesn't know because he's just guessing - he has no data.

 

does it matter if you're getting ripped off?

 

ok, if mobil will go 20k miles per actual usage:
http://www.flickr.com/photos/38636024@N00/4291579733/

will you still change it at 5k?

 

Ya, really, JT. I think most of us hangin' here happily doing the car
talk thing are public school folks. ;-)

 

:

<the usual troll of snide comments on creative writings of others>

<the signoff motto: nomina rutrum rutrum>
____________________________________________________________________

Using a Latin signoff motto has become a fad because it gives
a writer an air of learning. Lucy Kellaway, a columnist for
Financial Times, experimented with converting modern
expressions to Latin. One of her samples was the expression,
''call a spade a spade''. The translation came back:
''nomina rutrum rutrum''.

Some who see the world in black and white have copied
and adopted this Latinized signoff as their own. Whenever
you see someone using this expression to suggest an air of
learning, remember that it was conceived as a joke, and that
its true translation is: ''call a shovel a shovel''.

Rodan.
______________________________________________________________

 

Flowing better at low temperatures is better, perhaps, IF you are subject
to low temperatures.. I, at this point, am not.

It is not necessarily the additive that is hygroscopic. Some synthetics
are more hygroscopic than hydrocarbon oils.

These are the glycol ester types of synthetics.

There is just no easy answer.