Oil viscosity

[Phill Brewer]

I have a new 2024 Rav 4 cruiser hybrid. My question is: Do you stick to the recommended 0W-18 oil (although, our dealers all use 0W-20) or do you go with 5W-30, which is included as compatible in the owners manual. The reason I'm asking is that in the 300 series they also recommend the low viscosity oil (0W-20), but many owners are getting their service people to use 5W-30, as it will prolong the life of the engine in our hot climate, particularly, in their case because they tow.

[campbeam]

Most importance reference material is the owner's manual for your specific vehicle for the recommended oil viscosity and oil specifications.

Learn/know the engine details and model code for the engine fitted to your specific vehicle.

Something else to consider that the same engine model are upgraded/refined over the years. Particularly consider the vehicle operating conditions e.g. freezing mornings with low temperatures

When you have those details then do your own research.

Personally, I mainly use the lube guides by Penrite and Nulon for ready reference. https://penriteoil.com.au/product-selector?by=Quick Search#/recommendations