Changing oil not Necessary

[Fat Charlie]

Originally Posted by Artan

I am asking everybody why there is no clear evidence (scientific evidence, documented facts to public) that proves oil change is neccessary or not neccessary?

Mainly because nobody cares whether or not you change your oil. Engine manufacturers seem pretty big on it being necessary and they're not selling the oil, just publishing the specification. If they could say "our engine doesn't need oil changes" then it'd be a pretty big selling point for their cars, don't you think?

Originally Posted by Artan

I am saying that to convince me that we need an oil change there should be a test with two same engines one with oil change and the other without. Drive them for certain amount of time and mileage, see the fuel and oil consumtion, open them and the internal parts of the engine for inspection if and how did they wear, compare and the result will be obvious.

So do that test. You don't need two cars, though- we can just assume that the properly maintained car won't show much wear. Tear your engine down every 10,000 miles and photograph the parts, and see how long it lasts. Most of the experimenters here don't test their rigs to destruction, though.

The way I see it, every engine is different, lubrication is not bad, and an oil change once in a while isn't expensive. I don't feel that I'm being "too safe" or taken advantage of.

[Artan]

Originally Posted by Fat Charlie

Mainly because nobody cares whether or not you change your oil. Engine manufacturers seem pretty big on it being necessary and they're not selling the oil, just publishing the specification. If they could say "our engine doesn't need oil changes" then it'd be a pretty big selling point for their cars, don't you think?

So do that test. You don't need two cars, though- we can just assume that the properly maintained car won't show much wear. Tear your engine down every 10,000 miles and photograph the parts, and see how long it lasts. Most of the experimenters here don't test their rigs to destruction, though.

The way I see it, every engine is different, lubrication is not bad, and an oil change once in a while isn't expensive. I don't feel that I'm being "too safe" or taken advantage of.

The biggest profit when selling oil is reached at Car brand representatives, like you own a VW and you go VW authorised service for changing the oil, not at regular mechanics, becuase they say its original oil. That oil is taken from the same tank but it just bears another sticker. Its just bussines nothing else. The final costumer is the biggest looser!

[Fat Charlie]

Trust me, most people don't go to the dealer for maintenance, and dealers don't make their money on oil changes. Quick lubes just use bulk and you're lucky to get the right grade, but a real garage can get oil of the right specification delivered pretty quickly from the parts store.

[Artan]

There is no reason to continue the discussion any more. I gave all the explanation why the oil shouldnt be changed. I will report back after 30.000 km of course using the same oil.

[Ford Man]

I suggest you read the following link.

http://www.ehow.com/list_6384164_eff...g-oil-car.html

[Artan]

Originally Posted by Ford Man

I suggest you read the following link.
The Effects of Not Changing Your Oil in Your Car | eHow.com

Bring something new to the forum not these same things we hear everyday my friend.

Check this one; Oud-directeur Castrol: olie verversen onnodig | Krimineel.com

[user removed]

Originally Posted by Artan

There is no reason to continue the discussion any more. I gave all the explanation why the oil shouldnt be changed. I will report back after 30.000 km of course using the same oil.

How about 300,000 km. Or maybe a 1,000,000 like many cars I have seen, or even 1.5 million. I guarantee your engine won't make that distance.

To your point. I have increased the change intervals in the last few years from 3k miles to 5k then I am trying 10k miles. There are extremes to every preventive maintenance. There are also limits to the extremes.

You like to offer a counterpoint to every post in this thread, but you offered no counterpoint to my request for examples of engines where oil change intervals were ignored, which is your position. In one regard you are correct, spending money on oil changes while the rest of the vehicle gradually disintegrates could be a bad investment. There is a balance that would ideally find the vehicle going to the scrap yard with everything in a balanced state of deterioration.

While you may actually believe what you propose, I KNOW what the consequences of your actions will produce and have seen hundreds, maybe even thousands of examples of engines that died long before their time was due to neglect in oil maintenance.

But then you will be just another one of those thousands who learned the cost of neglect.

regards
Mech

[Artan]

Originally Posted by Old Mechanic

How about 300,000 km. Or maybe a 1,000,000 like many cars I have seen, or even 1.5 million. I guarantee your engine won't make that distance.

regards
Mech

Imagine the amount of oil, filters, pollution, and time spending on the engine until it reaches 1.000.000 or 1.500.000 km!

[jkv357]

Originally Posted by Artan

I am not saying that they degrade or upgrade. I am saying that to convince me that we need an oil change there should be a test with two same engines one with oil change and the other without. Drive them for certain amount of time and mileage, see the fuel and oil consumtion, open them and the internal parts of the engine for inspection if and how did they wear, compare and the result will be obvious. Its very simple. The labs are just saying the oil contains these kind of minerals and their amount. Thats it. There is no conspiracy, this is totally something else.

I do recall something similar, done with NYC Taxi cabs. One got regular changes the other did not. Guess what the difference was - not much...

But, that's not my world. Those engines are started once and run all day. That's easy on an engine - 1 cold start (minimal acids and unburned fuel), quick and complete warm-up, extended running to burn-off moisture - perfect.

If that's what I did daily I'd run my oil a long time too.

My engine's life isn't so perfect...

[Artan]

Originally Posted by jkv357

I do recall something similar, done with NYC Taxi cabs. One got regular changes the other did not. Guess what the difference was - not much...But, that's not my world. Those engines are started once and run all day. That's easy on an engine - 1 cold start (minimal acids and unburned fuel), quick and complete warm-up, extended running to burn-off moisture - perfect.

If that's what I did daily I'd run my oil a long time too.

My engine's life isn't so perfect...

This is a perfect example of no need for an oil change. Tell us JKV357 which of the engines was in a better shape!? Dont tell me it was the one without oil change! Its getting interesting,