Question about truck oil

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I have a question that might sound strange. We have a Volvo who needs a CJ4 (vds-4) and a MAN who wants the M3477 .
We want to buy 1 oil to use in the garage and want to buy a drum of 208 ltr.
Problem is as following .
If i buy CJ4 VDS 4 , it covers the Volvo but i dont cover the MAN specs.
And if i buy the oil who has the M3477 specs, all the oils that has this specs are CI/CF or Volvo VDS-3, so i cant use it on the Volvo.
The M3477 is MAN M3477: S.Ash < 1.0%, S < 0.25% (*), P < 0.08%, BN > 10

But it would be normal to think that criteria for CJ4 VDS4 is higher than CI4 VDS3 or am i missing some point here.
As Man garage is telling me that i can only use M3477 or it will affect warranty and clogging up my filters. Who is right, do i need 2 types of oil or can i buy the CJ4 VDS4 and use it on both?
 
M3477 calls for ACEA E6 oils, with P Some E6 oils have also an E4 and E7 spec. Specifically, Mobil 1 LE 5W30. It meets VDS-3 but not VDS-4.
Don't use the CJ4 (E9) oil on the MAN. Ask the Volvo people if something like the Mobil 1 LE 5W30 will be OK with the Volvo.
There is NO E6 oil that also meets E9, or CJ4 specs, to my knowledge.

Charlie
 
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