Quote:
Originally Posted by Dancake
0W/30 A5/B5 is not viscous enough when the engine is up to operating temperature. 5W/40 A3/B4 is the better grade of oil for these engines.
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Of course it is , It is what Volvo recommends as the premium oil for D5 ! They specifically said do not use a 40 grade oil in their oil charts 13 years ago ...