Polyol ester oil worldwide unique C3, upgrade MB-229.51

 One more thing, we would like to know whether the quality of 5W50C3, 5W40C3, 5W60C3 can be equivalent to EEC regulations: MB-229.51?  If not, could you produce them?

  >> Well, we can reformulate a bit to meet this spec, but we have again tell you that MB does not support the MB.229.31 nor 229.51 as 50 and 60 viscosity.

B. Our customers would like to know XXXX factory could produce which kind of best approval for POLYOLESTER oil?

For example, we had asked the offer of 5WXX with MB 229.51 before. Could XXXX factor produce one better than MB 229.51? The latest is? Our customers would like to buy the best/new one.