Oil advice & recommendations from oilman @ Opie Oils

[oilman]

Make: Peugeot
Model: 306
Year: 2001
Engine type: 2.0 HDi
Performance modifications: Remapped to ~125bhp, custom turbo back exhaust.
Driving style: Road, plenty of motorway miles as well as a decent amount of abuse on some more exciting roads

Engine and Gearbox oil recommendations please

A 5w-40 is ideal.

http://www.opieoils.co.uk/c-656-5w-40.aspx

Out of those, the best ones are the Fuchs/Silkolene Pro S, Millers CFS/CFS NT, Motul 300V, Redline and Gulf Competition. The Motul 8100 X-Cess, Millers XFS, Fuchs GT1 XTL/Supersyn, Shell Helix and Mobil Super 3000 are good, cheaper alternatives.

You need an MTF for the gearbox and I would go with the Redline MTL, Amsoil MTF or Fuchs Sintofluid.
 
http://www.opieoils.co.uk/c-670-75w-80-75w-85-mtfs.aspx
 
Cheers

Tim