Here is a video that experiments the usage of materials in E5 and E10
 

 

I found that really interesting. So many different views on this dotted around everywhere from some saying ‘E10 never damaged my engine, it’s perfect’ to ‘if you use E10 you will wake up with a horses head in your bed and your van will be torched’. Trick now is finding E5 at a decent price, local supermarkets no longer stock, although I did spot it cheaper that diesel at an esso garage.