I have a 2007 audi a6 I am flushing the coolant my question is can I just run straight coolant g12 through cooling system or is it necessary to add water thanks

 

If you are flush your system, then running G12 is waste of money. Just run water through first, drain, and fill it back up with 50/50 mixture.

 

I am very confused about what u just said your telling me drain my coolant put water through it then plug it up and throw in half g12 and half distilled water. If so I have 2.5 Gal capacity there for I should put gallon and quarter of g12 and water?

 

Does any one have a DIY for coolant flush on C6 model Audi ?

 

No. Drain the coolant. Fill the system with distilled water. Run it briefly and drain. Fill it back up with 50/50. You will never be able to fully drain the system. Your car will not take 2.5 gallon.