Which DBL exactly?
Actually ,MB say nothing about the chemical composition except for the warning against mixing 325.3 with 325.0 or 325.2.
Looking at the lists of approved coolants by category,one can conclude that 325.0 is silicate-containing and 325.3 is silica-free...however you can see TDS of product that are 325.0 and silicafree or 325.0/325.2(simulatneously) that can be either type (?).
For example Glaself MDX is listed in MB 325.0,but IS solicate-free: http://www.lubadmin.com/upload/produit/FichePDF/lang_32/140.pdf
...etc.
So I guess they`re rather "performace"categories than strictly composition-defining.Anyway, 99% of the market DBL 7700.30(MB 325.3) is OAT,silica-free and the majority of 325.0 are HOAT with different levels of silicates...so one has to look for more info before buying anything...
Now I forget if it's PEAK Global or Prestone "All Makes" that carries it, rather "recommended for it". I think it was PEAK, so that means pretty much nothing in terms of Si.
