Quote:
Originally Posted by Waynedance
What does Volvo know................... but I here the theory.
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Volvo doesn't make their own engine oil, so you'd expect the companies who do make engine oil to know a lot more about its capabilities. Send an email to Castrol asking them what oil they recommend for the D5 engine. Volvo recommends Castrol oil, but Castrol will tell you to use a different oil to Volvos' recommendation of 0W/30 A5/B5 because of its inability to properly protect the D5 engine.