For lampredi 1.6i.e
Handbook says 10w40.
Is this still what most people use?
The reason I ask is 10w40 is the manufacturer grade for my Alfa v6, but I put in Millers 10w50 and the V6 does well on that, doesn't burn a drop and gives a bit more confidence when hard driving and I am wondering about using the same for the Prisma.