diyer

Came across this on the net:

"Engine wear actually decreases as oil ages. This has also been substantiated in testing conducted by Ford Motor Co. and ConocoPhillips, and reported in SAE Technical Paper 2003-01-3119. What this means is that compulsive oil changers are actually causing more engine wear than the people who let their engine's oil get some age on it. " he he he, suckers!

See >http://neptune.spacebears.com/cars/s...obil1.html< for this oil study and above comment.

Whoa threw me for a loop!

omeara7

hm........could be true although I changed the oil every 3,000 miles on my 88' Acura Legend and it had 240,000 miles on it before I had to get rid of it. The engine still ran fine and I had to get rid of it because of rust (failed inspection). So I'm not so sure that is entirely true but it could be.

Al Czervik

something about the metal particles, dust, and other **** that ends up in the oil just does not lead me to believe that it is better to leave oil in.

This is propaganda to let you lapse with you oil changes. which then would result in engine failure way down the line. This mean you might buy a new car sooner. Which mean the auto company earns more of you dollars that you worked hard for.

Riceburner247

iTrader: (1)

That may be Ford's fucked up way of doing things, but I'm still gonna be changing the oil in my Honda.

JL Audiophile

leave the oil in? haha... thats why f-150's dont last over 100k+ miles

Confuc1ous

isnt it kind of dumb to just leave the oil in, all sorts of **** gets into the oil, man, hell with them, i dont own a ford so F'that, i got me a Honda and my **** likes its oil changed every 2000 miles...the cleaner the better!

puke@sprintmail.com

Aren't you forgetting, all oil is supposedly millions of years old before it is extracted from the oil wells??? So age has nothing to do with it.

They spend millions of dollars cleaning it up before they can sell it.

And you are trying to tell me that the increased friction caused by dirty oil is a good thing??? Why not take the oil out of your motor altogether and get some SERIOUS FRICTION???

And , while you are at it, you better call the big riggers with cummins/ and caterpillar diesel motors, they have two major oil filters PLUS a micro-filter that gets absolutely EVERYTHING out. They better remove those filters so they can get some dirt in there and get longer engine life.

I have had 3 nissan trucks. All were sold with 200 to 300 thousand miles on them and still running as good (or better, no stretch) than new. I change oil every 3,333. miles.

Our old honda's all had over 350 thousand miles on them before sold and still running perfect.

I credit the overkill maintenance we did on them to get that kind of wear (or non-wear). Cummins as put (IN WRITING) that many of their fleet trucks (they keep good track of maint. and mileage) go over a million miles (I'm talking dodge pickups, not rigs). And, of course, the big rigs usually get from 1 mil to 1 million 5 before needing a rebuilt (they used to 0only get 600k when they were all 2-stroke diesels).

The one thing all of the above have in common is:
1) a well built motor to start with
2) a good way of keeping foreign particles out of the oil and fuel system.

OK, You decide. If you want, you can come get all my dirty oil and recycle it through your car. And while you are at it, please keep this idiotic propaganda off this website, there may be someone out there who will believe you and screw something up in an otherwise fine automobile.

i3igpete

sounds fishy. i'm in SAE and i didn't hear about this so-called SAE "study" they mention. nothing in my automotive engineering journals at all.

Schmitey

Ok first off with the VTEC it is an absolute must to change the oil religiously. I've talked to guys who have had the solenoids freeze on them resulting in a huge amount of hp loss.

Second look at who this is supposedly coming from...

FORD...the name says it all. Fix Or Repair Daily
Conoco...never been real impressed with their gas to say the least

Lastly my buddy went 50k plus miles on his Explorer before I just couldn't live with myself anymore and I stole his car from him and changed it myself. Holy freakin' crap!!! When I poured the old oil into a milk jug the funnel was lined with metal filings among other things. So yeah all Ford is trying to do is make people get what they're not paying for in oil changes...a new engine.

Oh let me throw this out too. I used to work at O'Reilly's and heard gripes all the time about Penzoil. I'm told it has a high wax content and over the years it can settle into your oilpan. One guy told me he tried to drain the oil and when nothing came out he got suspicious and took off the oil pan to find 2-3 quarts of muck in the bottom. Another guy took off his valve cover and there was wax molded to the same shape! Use at your own risk!!!

Justin Klemgold

I can't even believe this was posted....leave your dirty oil in...HAHAHAHHAHAHAHAHHAHAHAHAH....go for it!

NCSTIdriver

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JL Audiophile &raquo;</TD></TR><TR><TD CLASS="quote">leave the oil in? haha... thats why f-150's dont last over 100k+ miles</TD></TR></TABLE>

so you mean my dads old 96 F150 didn't really last to 175,000 before he decided to sell it??? EDIT: we changed the oil every 3k lol

Confuc1ous

regular maintenance is the only way you are gonna get high miles out of any brand of car, Ford obviously either did this so they can drive up the cost of maintenance for people who own their cars, or perhaps it isnt even true, maybe its something that doesnt exist, but was written about, a lot of people do that kind of stuff today, they make things up, so you never know, but changing the oil is a necessity...

JimBlake

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by i3igpete &raquo;</TD></TR><TR><TD CLASS="quote">sounds fishy. i'm in SAE and i didn't hear about this so-called SAE "study" they mention. nothing in my automotive engineering journals at all.</TD></TR></TABLE>It's right there, but it's fishy, too.

Check out http://www.sae.org... Better yet, here's a link to the paper itself.
http://www.sae.org/servlets/pr...-3119

Title: Antiwear Performance of Low Phosphorus Engine Oils on Tappet Inserts in Motored Sliding Valvetrain Test

Meeting Where Presented: SAE Powertrain & Fluid Systems Conference & Exhibition, October 2003, Pittsburgh, PA, USA, Session: Rheology and Tribology

I didn't feel like spending $12 to read it, so who wants to order a copy?? I bet it doesn't REALLY say you should leave your oil in there forever!

91AccordSE

The metal shavings and small particles are not what needs to be worried about in engine oil, it is the other contaminants such as fuel. The oil filter will catch about anything larger than 5 microns.
The longer oil is ran in an engine, the more combustion waste it will accumulate. In other words, the piston rings will seal off the majority of the oil and the fuel from mixing, but they are not 100% efficient. If they were, the pistons wouldn't be able to move. So the more fuel you get in engine oil, the more the lubricity and viscocity factors will decrease. The more your oil resembles fuel instead of oil, the more engine wear you will get.
One of the reasons that engines are lasting so much longer these days is because of fuel injection. By replacing the carburetor with a system that can determine the proper amount of fuel that is needed during all aspects of driving (idling, and WOT) you lower the possibility of overfueling. Overfueling will increase the chances of contaminating the oil with fuel.
I personally try to change my oil every 3-5k. I also think that 2000 or 2500 is too soon. No need to do it that often.

Now lets just not get into synthetics!!!

SOhp101

Well it seems to me that the engine always seems a little rough during the first initial stages after the oil change, but then after about 100 miles the engine starts sounding much better than what it used to sound like before the oil change.

As a side note, this is similar to the idea of deep frying when cooking: you get your best frying results when you have a bit of old cooking oil mixed with your completely new batch of cooking oil. Just using the new cooking oil alone causes foods to be undercooked.

As for me, I change the oil every 10k, but that's only cause I use synthetic oil. The discussion of synthetic oil usually brings up a good conversation on threads .

Two_K Si

i once read that the reason why very frequent oil changes cause more wear is because the anti-wear additives found in oil require some time to "plate up" in your engine. With very frequent changes, the additives never get a chance to do this. I don't know the validity of this information, but it sounds like a possibility.

diyer

Yeah well, try telling that to these bunch of morons. I did not read the article to say that one should not change the oil or to leave it in alot longer. Just that too frequent is also not good. But I am not one to say for sure. I don't pretend to be an expert like Justin or Puke@sprintmail. I was merely wondering about something I found on the Net. Btw Puke, you sure have given your own share of faulted advice. I mean that name p u k e Good god!

diyer

Turbowa

You may also want to look at what there calling to soon. Is it changing your oil every 100 miles or every 10,000 miles. I'm sure to some extent this is true, but I'm sorry if your trying to tell me that changing it every 3000 miles is to soon then you, ford and ase are smoking a lot of crack.

JimBlake

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by diyer &raquo;</TD></TR><TR><TD CLASS="quote">I did not read the article to say that one should not change the oil or to leave it in alot longer. Just that too frequent is also not good. But I am not one to say for sure...</TD></TR></TABLE>Did you get the SAE paper? I'd be interested in seeing some details.

From the title:
"Antiwear Performance... on Tappet Inserts in Motored Sliding Valvetrain Test "

That sounds like the test might have been performed on valvetrain components only. Perhaps a valvetrain was driven by some external means, like a electric motor spinning the camshaft in a head which was held in a fixture. That kind of test doesn't even pretend to address issues like contamination by fuel & combustion products.

It might be a classic example of some narrow specific test being taken out of context.

iand415

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Schmitey &raquo;</TD></TR><TR><TD CLASS="quote">
FORD...the name says it all. Fix Or Repair Daily
</TD></TR></TABLE>

haha good one

Krut

hahaha exactly true

sj993

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kattiflis &raquo;</TD></TR><TR><TD CLASS="quote">something about the metal particles, dust, and other **** that ends up in the oil just does not lead me to believe that it is better to leave oil in.

This is propaganda to let you lapse with you oil changes. which then would result in engine failure way down the line. This mean you might buy a new car sooner. Which mean the auto company earns more of you dollars that you worked hard for.</TD></TR></TABLE>

Somewhat difficult to decipher with the language but more or less true.

regnevazota

It does sound odd and not what one unusually is told to do, but perhaps this is about keeping that special new engine break in oil in long enough and not draining it too soon?

TheMuffinMan

iTrader: (1)

FROM THE CRYPT

regnevazota

Not for me. We've were talking about this recently. Many subjects keep repeating themselves every so often on all the automotive web sites. I was browsing the archives and saw it and remembered a few of us local guys talked about it a few days ago. One of the engineers said that is what he thought it might have been about ... Doesnt matter to me though, just thought I'd add the info. The thread had no conclusion to it. I mean like Duh, all those comments on changing oil goes without saying. Shadetrees think they know more than Ford Motor Company ... LOL