My v6 4 motion was running a bit flat so I bought some redex from Halfords. I asked one of the guys in store for it and he gave me a bottle which I put in my car along with a full tank of petrol. After a while the car started running really rough, idling fine but when I put the foot down it was juddering and really sluggish. I thought it might have been bad petrol but now my mate tells me they make 2 different types of redex, one for injection engines and one for carb engines. I don't have the bottle I used so can't be sure which the guy gave me so what I'm wondering is, supposing it is the carb one I've put in what damage if any will it have done to the car?! And is there anything I can do about it?
Thanks for any advice