actually?...I had just ordered (2) of those jugs of engine ice from josh at rydersconnection....we looked it up that day and i just looked it up again and the busa's coolant system requires 3.1 US Qts.
what does happen though is alot of dudes do either 1 of 2 things that causes them to wind up using "less than required"...and they are....
1. Not burping all the air out of the cooling system and/or?...
2. Never bothering to drain and flush the coolant overflow/resivoir tank.
so?...the way i see it?....if ya don't get at least 3qts in your cooling system?...ya did sump'in wrong.
on a brighter note?...i hear the engine ice is well worth the cash as..the hassel was gonna come anyways..and it does away with that as well...no foaming....no "silicates"....which have a way of destrying water pumps.
L8R, Bill.