Originally Posted by dopper99
Diesel cars dont rev as much as petrol so you dont use "top end of the rev range". As a result I find that in my car, the mid range performance is improved with premium fuels ie lower down the rev range for a diesel. Therefore you do
notice it every day as you only need to squeeze the throttle and feel the response straight away.
In a petrol, then yes I would imagine you would need to rag it to feel the benefit from putting in premium stuff.
My improvement will be one of these when it's run in.
STD fuel and loads more power.