This is the oil analysis for our Renault Koleos (Nissan Xtrail T32 with QR25DE engine)
Serviced with the dealer here in Australia where Castrol RN17 5W30 was used.
It's the only 10w40 grade I can find that meets the C3 required for my vehicle.
It doesn't burn much if any but like most modern diesels it spews a little into the catch can.
So I changed to this oil 4 months ago from penrite enviro and was impressed straight away. Set away for uoa and the result is below.
I don't have an exact comparison but based on the 1500k penrite sample this GW has performed better. The oil was in from October till now so over summer with some...