Quote:
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?
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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?
Quote:
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.
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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.