I will only use Mobil 1 0W/40... It's the best, but probably twice the price of the castrol! I use that for top ups, and I think the service centre use the Castrol as standard...
I also use ZX1 (formula 1 anto friction agent)... It's a proper one, not like slick 50 and all that PTFE rubbish! www.team-zx1.co.uk... I have used it on about 10 cars over about 10 years and it makes a remarkable difference!
I also use ZX1 (formula 1 anto friction agent)... It's a proper one, not like slick 50 and all that PTFE rubbish! www.team-zx1.co.uk... I have used it on about 10 cars over about 10 years and it makes a remarkable difference!