":::Jerry::::" wrote in message
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"top gear" wrote in message
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":::Jerry::::" wrote in message
...

"top gear" wrote in message
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"StealthUK" wrote in message
oups.com...

The Natural Philosopher wrote:
A few tears ago I had a boss who had a passat that had done
200,000km
-
I supoose about 160k miles?

Ordinary oil, changed by the book, and it was fine.

Depends on how the car is driven and even 200k miles on modern
engines
is nothing amazing these days. I'd rather go by the condition of
the
oil than stick to manufacturer's recommendations.

Regards additives, I believe most of the stuff on the market is a
waste
of space but Slick50 engine oil additive isn't a bad product. I've
used
it and noticed engine noise was reduced, especially during
start-up,
with no adverse effects. No idea about the gearbox stuff, never
used
it.

It is true that cars can go long mileages without any major work. My
point
was that using Mobil 1 in the engine and g/box and Slick 50 g/box,
and
the
change intervals I suggested, the engine and transmission is still
as
smooth
as a new one, even after 100K miles. I have come across cars that
have
really clocked up the miles with the usual roughness after 70K. The
original
post was about roughness. I suggested how to maintain longevity and
smoothness, which actually does work. My design engineer friends
says
that
modern engines are designed to be smooth to 50K miles with normal
servicing
and decent oil, and some engines deteriorate rapidly in smoothness
after
that figure. He recommends fully synthetic oils.

REGULAR OIL CHANGES WILL HAVE THE SAME EFFECT, it doesn't matter what
the
oil is, as long as it is the correct spec' for the engine.

The oil does matter. The best available is fully synthetics like Mobil 1
and
Shell Helix fully synthetics. These oils are much superior to normal
mineral
oils in just about every aspect. This is a know fact that is not open to
question.

So why are they not specified by the people who design / make the engines
?

The makers specify an API rating. It is on the side of the can, Some makes
do specify synthetic oils.

IMM, you were proved wrong the last time you spouted this marketing bollox
and you will be proved wrong again.

You have me mixed up with someone else, and you are not the first on this
news group to do so.



I can't comment on Slick 50 engine treatment as I have never used
it.
As
I
looked after the engines and transmissions from new using the best
oils
available, I have never experienced roughness to say that something
added
stops it.


And I have known vehicles that have gone 150.000 plus miles on nothing
more
than the makers recommended oils whilst being changed on or before the
advised service intervals for the vehicles use.

I am not disputing that. It is maintaining the smoothness and newness
feel
for as long as possible that is the point being made by me.

And you are wrong, or are you in fact disputing what I said above ?!


Wonder were IMM is ?....


To answer my own question, he seems to have morphed again :~(

Keep asking yourself questions then :-)