I have Toyota Kluger (Highlander in USA) with 3.3 ltr V6 with 128k kms and have recently used Penrite HPR 5W-40 in my last oc after using Mobil 1 EP 5W-30. The engine is quieter with this oil over the Mobil, maybe as it is thicker, but surprisingly I am getting an improved fuel consumption of the order of around 6%.
Also, as an aside, my Corolla with 138k kms is quieter with Redline 5W-30 than Mobil 1 5W-30. Mobil oil noisy?
Roger.
Kluger Penrite 5W-40, Amsoil 75-90 SVG, soon to replace atf with Redline D4
Corolla Redline 5W-30, Redline MT90