it's a little under 3 litres. so if you buy those 1 lit per bottle, 3 of those should be enough, or if you buy those 1 pet 4 lit ones, can keep as extra. many workshop buat bodoh straight keep the extras for themselves.
I just took on a 350z and lost him on the 4th gear due to my boost cut( that happen after i send my car to dyno tune for an emanage at N1) so i need to re tune my car so that i can have a re match with this guy...