It was somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember "top gear"
saying something like:

From new, the gear oil should be dropped after 2K miles and replaced with
Mobil 1 fully synthetic gear oil. Replace every 2nd service, that is approx
every 2 years in most cars.

Renew gear oil every second service? What a load of toss. You can use
synthetic gear oil if you wish, but it's good for tens of thousands of
miles of use.


From new use Mobil 1, or similar, fully synthetic engine oil, and change as
per makers recommendations. The oil can go longer, so it gives you leeway on
service intervals. No one has a service 9K miles on the dot. No need to use
the likes of Slick 50 in the engine if fully synthetic oil is used from new.

Never use synthetic engine oil 'from new' as the thingymybobs won't bed
in right. Move onto sythetics at the second oil change.

Really, your advice is misleading ********.
--

Dave