Changing oil not Necessary

[Artan]

Originally Posted by meelis11

Probably you can get away never washing a car also, it does not broke in 10.000miles but
* it looks nicer when it is clean
* probably it does get rusted sooner if you don not clean your carSame thing with oil
* it does get worn quicker if oil is old and there are burning leftovers and metal particlesSeems common sense to me. Every oil company would be proud to present oil which does not need replacing at all. But they dont have such oil.

I have explained 100 times this issue with metal particles. They are so small that are irelevant for the metal parts in the engine. If there are bigger ones the filter would stop them. The surface of the metal parts in the engine has much bigger grooves than those small particles, they are irelevant but they are there, they travel around the engine and that is nothing. If they would be dangereous they would have destroyed my engine since i didnt change the oil since nearly 37000 km but i was supposed to change it after 15000 km according to the sticker in the oil bottle.

For you who dont believe in this have some respect when other people are saying that they didnt change oil for many miles and the engine is still ok. Personally I did not change it, please be patient in discussion, and bring something new. Read other older comments before you start typing letters.

[jkv357]

Artan - to prove your point you need to have the oil analyzed. That will tell you if it is still usable.

When you say "it's fine" - what does that mean? Is 100,000 mi without an oil change enough? If the engine is junk at that point, have you gained anything? You'll have to wait and see.

Have you ever seen stone get worn away by water? Oil under pressure with micro particles of abrasives (metal) will wear away metal parts - slowly, but surely...

[Artan]

Originally Posted by jkv357

Artan - to prove your point you need to have the oil analyzed. That will tell you if it is still usable.

When you say "it's fine" - what does that mean? Is 100,000 mi without an oil change enough? If the engine is junk at that point, have you gained anything? You'll have to wait and see.

Have you ever seen stone get worn away by water? Oil under pressure with micro particles of abrasives (metal) will wear away metal parts - slowly, but surely...

jkv357 - I understand what you mean, I will believe the lab results partially. They will say your oil contains this much amount of metal particles and so on, but i will not agree with them that they say it will wear the metal and you need to change it.

So as you say the water wears away the stone. - It is true, I have seen it. Logically somehow the oil should do the same in the engine but we are discussion at a very low level becuase we are not specialists on those areas. I believe that there is a devil sitting in a very small detail somewhere. I dont know where he is. However the best way to test it is to test it yourself. I like discussing while test is going on in my car. One thing that is convincing me that oil does not need to be changed is the oil in my car that is still good after 37000 km and the engine has no issued at all.

[meelis11]

Originally Posted by jkv357

Artan - to prove your point you need to have the oil analyzed. That will tell you if it is still usable.

When you say "it's fine" - what does that mean? Is 100,000 mi without an oil change enough? If the engine is junk at that point, have you gained anything? You'll have to wait and see.

Have you ever seen stone get worn away by water? Oil under pressure with micro particles of abrasives (metal) will wear away metal parts - slowly, but surely...

Could not say it better.
Artan, for now you dont prove anything in long term. For now you just skipped one oil change and little bit more. Get your oil analyzed...additives get used in oil and acids are starting to build in oil over time.
Drive 200.000 km without changing oil and compare engine parts to those where oil is changed regularly. I am little bit sceptic that it lasts 200.000km with same oil...but even if your engine can live so long... I still believe that it is more worn than regularly oil-changed engine.

PS! I have read topic before I started to write.

[Artan]

Let's see buddy let's see.

[UFO]

Darn, I was hoping the new activity in the thread meant Artan did an oil analysis, or Artan was reporting excess oil consumption. Back to waiting mode...

[meelis11]

Artan, how many kilometers per month/year are you driving? From that we can quesstimate, how long it takes to get some update info, how your car holds up without changingg oil. That topic is starting to make me interested, how it holds up

[Artan]

It is interesting.

I make around 2000 km per month, 24000 a year. My oil hasnt been changed since April 2010 or 20 months, 37000 km. The oil in my car is Castrol Edge Turbodiesel 5W-40 and it is adequate for my car (505.01 regular changing intervals max. 15000km or 12 months). My car VW Passat 1.9 TDI, PD, automatic transmission, 96 kw or 131 HP. I checked the oil yesterday (fingerfeeling and visual inspection) apart from being black it is as viscous as new oil.

[jkv357]

Originally Posted by Artan

It is interesting.

I make around 2000 km per month, 24000 a year. My oil hasnt been changed since April 2010 or 20 months, 37000 km. The oil in my car is Castrol Edge Turbodiesel 5W-40 and it is adequate for my car (505.01 regular changing intervals max. 15000km or 12 months). My car VW Passat 1.9 TDI, PD, automatic transmission, 96 kw or 131 HP.
I checked the oil yesterday (fingerfeeling and visual inspection) apart from being black it is as viscous as new oil.

Why do you think it's turning black?

Again - accessing the oil's viscosity by sight and "fingerfeel" isn't an adequate test of anything in any way...


Jay

[Artan]

Originally Posted by jkv357

Why do you think it's turning black?

Again - accessing the oil's viscosity by sight and "fingerfeel" isn't an adequate test of anything in any way...
Jay

I know i know Jay, it is not 100% to believe it if you check the oil by fingerfeeling but at least if the oil gets contaminated or brakes down you will feel something by finger (not 100% but at least 50%). I know when i had another car i was using very cheap mineral oil, after 2000 miles by fingerfeeling you could feel very little viscosity in that oil. The oil was exhausted. This full synthetic oil is completely different. -The viscosity of the used oil and the new oil is completely the same.

It becomes black after few hundred miles, it is totally not important according to me. It is from the smoke in the combustion chamber. The PCV system takes it away to burn again and a very small amount will get mixed in the oil.

I am telling you boy this issue of changing oil is completely fake and the reason is to win money if there are people who believe their story.