Re: [OM] [OT] 20W oil, was spare wheels, deer and BMWs, etc.

[Brian Swale]

Some more thoughts which don't seem to have been mentioned thus far in this 
thread.

And I used to get without fail the UK motoring weekly magazine, "Autocar", 
which in my 
opinion is the best in the world for information and unbiassed excellent tests 
of cars. But 
since about 15 years ago I have decided it is too expensive, and in any case I 
could never 
afford a new car, so I stopped  having it sent to me.  So I am out-of-touch 
with the latest.

BUT, one important factor in oil prescription is the advent of synthetic oils. 

Their behaviour differs greatly from the old "normal" mineral oils which 'run / 
flow away' from 
hotter zones, to cooler ones.

The synthetic oils actually are attracted to heat, which means that they 
naturally flow to where 
they are most needed.

The most telling test I ever read was one from Australia. A new car was 
appropriately filled 
with synthetic oil and run so that the oil was distributed to where it should 
be. Then all the 
engine oil was drained out.

That car was then driven around the entire circumference of the island 
Australia, and then 
the  engine was dismantled and components measured for wear.

There was none - or it was negligible.

Brian Swale

Apologies for the nuisance line from Avast that will follow this. I agreed to 
it when I installed a 
new Avast engine; ... and now I can't find a control to stop it.

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