Can the ones that have been using NF for some time indicate what sort of mix they put in when filling up, as the instruction on the bottle seem a little vague?

Thanks all

NF Race - the black bottle. Instructions are horribly vague. Basically it's 60mil per 60 litre tank, and double on track.I actually use around 100mil per tank on the road as my car is mapped for it ( plus optimax) and double on track.
Get yourself a small squeezy water bottle with one of those pull out "nipple" jobs on the top and mark it in 60 mil or whatever divisions. Easy to squirt it into the tank then. Warning - chuck this bottle out every couple of months as the NF will rot it:D

FAT BOY

So if I used that mix(1ml - 1Ltr) thats the minimum dilution as indicated on bottle, what sort of RON will that give me with Optimax @ 98.5 I need 100 or there abouts

You should be there with that but I would run a bit more, it won't hurt and can help - it's why i run with 100 mil. Once you get your knocklink you can see the difference- too little and the KL will light up, right amount and it stays calm.

I have my Type R mapped to Optimax and approx 100ml of NF per tank.