I work in engine lubricants for Shell so I know that Shell's top-tier oils are as good or better than any other oils out there - Castrol's Magnatec adverts are very good but Shell oils have the smae properties and we have compared the two and Shell Helix Ultra is better. Shell is a very conservative company, and is not very good at blowing it's own trumpet or creating persuasive adverts.

 

Also - Optimax petrol could potentially pay for itself by giving you extra mpg and greater power. Did you know that standard petrol in Japan is superior to even our Super (98 RON) petrols. Standard there is 100 RON ! Our standard is 95 RON. The quality of the petrol you use also affects engine longevity and condition like the lubricant does. I think US petrol is also better than ours. If you haven't tried it, YOU WILL FEEL MORE POWER USING OPTIMAX.

Some mates told me that magnatec oil must be changed religously at 10k miles and an oil flush must be used if changing brands cos it doesn't mix with other oils. There is some sorta gloop in it? Anyone else haerd this?