Glenn

I'm due to take delivery of a new WRX STI V5 Type RA in the next week or so and have been reading horror stories of melting pistons etc from petrol oil combinations. Can anyone give me some decent advice on what to do to protect the longevity of my new motor !

Thanks

rik.c

Glenn, always use 97 ron fuel ie:super unleaded and if you stick to silkolene oil products you won't go far wrong. Rik

Mike Tuckwood

I would (and do) use only Mobil 1, look at the link here,