Dave Plowman (News) wrote:

Synthetic oils only have an advantage in that they allow longer service
intervals with normal cars.

Not totally true.

With fully synth oils you can control viscosity changes with temperature
better, so get better circulation when cold and less chance of breakdown
when hot.

As well,.

This make sthemn very useful for highlty stressed engines, and for
engines that may run in cold climates and yet get very hot as well.

Not really your average shopping trolley though.



Your post suggested they stopped wear in
abused engines at extremely low milages - so low the cars would still be
within warranty.

Please make up your mind.

What mind would that be Dave?