Get 3-4 pints. It stays good as long as you don't open the seal so any extra you can use to top off the brakes or for flushing them. For the scratch you can start with 80 # go to 120 and finish with a blending pad. STAY WITH THE GRAIN!. Do not change the direction or you will have a lot more work correcting. David Teitelbaum vin 10757 In dmcnews@xxxxxxxxxxxxxxx, "steve" <steve@xxxx> wrote: > How much Dot 4 to replace clutch line? What grad of (sandpaper?) to > buff scratch