Hi All, I've been investigating sources of 0W-20 oil to meet Subaru specification ISLAC GF-5.
All the 'usual big names' seem to have a 'big price' but I've now located a supplier of Pennasol Super Extra 0W-20 at £18.40 per 5 litres delivered.
I emailed Pennasol (Germany) who confirmed that it meets the requirements for the BRZ . I purchased via www.mytyres.co.uk