So it's been almost 10 years since my last petrol engine, and thinking about what fuel to chuck in it. Now on my diesels I use v-power as it's a far cleaner fuel, I get much less soot out the back-end compared to normal shell fuel, I know this 100% as I don't need to clean the pipes or the rear end as much (A6 C6 cat based 3.0TDI with S6 tailpipes). Now I know you don't get much rubbish from petrol, but engines can coke-up even using 99ron fuels. So do I pay the extra or stick with regular. My petrol engine will be the 1.5 TFSI. Also my local shell station was not long ago rebuilt and new tanks installed, and don't really like the local BP station, and I don't live anywhere near tesco so cannot use there fuel. So that is why the thread is based around shell fuel.