I have a 05'Subaru Forester X.There is a TSB stating that only genuine Subaru coolant and conditioner should be used.States that corrosion,and damage could occur.The Subaru brand is phosphate(non amine type)specially formulated for aluminum.Knowing that their coolant and Subaru's additive has to be manufactured by someone else anyway,anyone know of brand sold that would be and equilvalant to the dealer brand?How important is the conditioner additive?Are there any available at a parts store that I could get if it is important?Thanks