Is it possible to feel a difference (smoothness, better acceleration,
etc.) after a normal-interlude oil change? Someone is claiming this and
I think it's just their imagination, but I was wondering if there'd be
any technical reason. I can't think of one, unless the oil was quarts
low or something drastic, which it wasn't.
of course you could, although it really depends on the state of the old
usually, oil goes up in viscosity as particle load increases with age,
so the engine will be having to work very slightly harder against that.
you'd not expect a big difference on changing to fresh, but it can be
there. i doubt that recreational oil changers that compulsively do it
every 2k miles will notice anything.
this is not a great link, but it's quick.
"Another little known fact is that the type and weight of oil can affect
the power as well. Pure synthetic oil can easily show a 1% - 3% or
greater increase in horsepower compared to conventional petroleum based
the same applies for older more viscous oil.
What a complete lot of nonsense. If the lubricity of the oil changes
in any perceptable degree, the engine bearings will fail. Particle
entrainment in the oil does not increase viscosity. Incidentally
where are these particles coming from? Surely you are not suggesting
these are metallic particles from engine wear. Where do you people
get their technical education from?
So long as you have satisfied yourself you are correct that is the end
of the matter no matter how wrong you happen to be.
As an aside, take a glass of water and add a teaspoon full of sand to
it. Shaker it. Does viscosity change? No? I wonder why given you
believe entrained matter changes viscosity. Incidentally viscosity
and lubricity are two separate characteristics.
Combustion products in engine oil are entrained matter although some
oxidation does occur which does not adversely affect lubricity or
viscosity. What does get depleted in engine oil are additives which
are the principal reason for oil change.
On the matter of combustion products, provided the diameter of the
products do not exceed oil film thickness they will do no harm and
will be removed by the filter. Combustion products in the oil of a
well maintained gas engine are minimal as compared to a trunk piston
wow, i love this guy! facts simply don't get in your way, do they!
what's next, mud is the same viscosity as water? 'cos that's the way
/your/ example works buddy.
you need to go back to your old high school and have a word with your
old science teachers - they failed you big time.
Main thing I notice is the used oil kills the weeds along the fence.
Here's some reading for ya,
$10 Million, Just for Motor Oil
The most advanced piece of technology in a Nascar vehicle these days
isn't its engine, its suspension or anything made of carbon fiber. It's
the motor oil.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.