I’ve wondered the exact same thing, to the point of calling Miller Oils (purchased from Opie) and they confirmed that the full SAPS oil was the right stuff for the 5 cyl engines. Seems that it’s the newer 4 cyl engines use the low SAPS oil and neither is any good in the other engine type.
Bit of a pain as I now have to keep 2 different types of oil for the family cars.
Hey ho
Rob
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