Matt said:
Sorry, but I've seen test data (from the source I've mentioned here
several times before - MCN) that shows the above statement to be
patently false. There was a wide range of data in virtually every
parameter of the oil that was tested.
Oh boy, here we go again. Where's this data? EXACTLY how much of a
difference? What are the FUNCTIONAL differences?
I provided you with oil analysis data for Super Tech Full Synthetic
5W-30. Do you have anthing to refute the conclusions therein? Do you
have any data showing that any other oil is demonstrably superior in any
way? You can keep making vague references to an old motorcycle magazine
article if you wish, but that's not good enough. It's time to either put
up or shut up.
Some oils have far better additive packages than others, and the
correlation wasn't perfect with price and brand name, but it was
significantly correlated.
Define "far better". What does that nebulous term mean in the real
world? How much of a difference in lubrication are we talking about
during a typical oil change interval? Is there even ANY AT ALL?
It's convenient to throw around meaningless terms with nothing to back
them up or provide any context. The bottom line is that you simply don't
know, but you're not going to let that prevent you from making unfounded
claims. You read one article that's what, six years old, and that's
aparently become gospel for you. When you look at it that way, it seems
pretty ridiculous, doesn't it?
Standards in most cases provide only a minimum (or ocasionally a maximum
to prevent catcon poisoning) requirement. They don't ensure equality at
all. The Air Force has a minium height standard for its pilots (and a
maximum as well). Do you you really think this standard means that all
pilots in the Air Force are the same height?
Again, a pointless attempt to confuse the issue with a specious argument.
If the SAE minimum standards exceed the requirements of engine
manufacturers - WHICH THEY CLEARLY DO - how can that possibly be a
problem? It can't be, except apparently in YOUR mind.
BTW, I'm a Quality Assurance Engineer, so you're really barking up the
wrong tree when you try to make such ridiculous claims.
The SAE has continuously raised its standards, which has resulted in
continuous improvements in oil quality. Does that mean all oils are the
same? Of course not, but the more you raise the standard, the smaller
the differences become, since the upper limit isn't changing much, if at
all. When you get right down to it, there hasn't been a truly
significant development in motor oils since the introduction of
synthetics. The bottom line is that there is no such thing as a
poor-quality, API certified oil.
Speaking of synthetics, if natural oils are sufficient to meet the needs
of the engine(s) - WHICH THEY ARE ACCORDING TO HYUNDAI - synthetics,
which are demonstrably superior, are already a classic case of
"exceeding the need". What possible REAL-WORLD difference could it make
if one synthetic is fractionally "better" than another?
The truth is that unless you're trying to push an oil to the limits of
its life by abusing your engine (racing) or extending your change
intervals to 10K, 15K or more miles, it doesn't make any difference what
oil you use. As long as you use an API SL/SM certified oil and change it
at Hyundai's suggested intervals, there is not likely to be any
difference in normal driving. If you don't want to believe that, it's
your perogative, but your personal paranoia doesn't change anything.
Perhaps you just find all the brand-name hype and bluster comforting,
but the truth is that it's just noise, as are your arguments.