Only at extreme low temperature, my Lexus dealer always uses 5W30 (For every Lexus or Toyota, hybrid or not.)

 

That’s not how it works. The manual makes clear other grades are acceptable. Also, to deny a warranty issue the manufacturer has to prove the defect was due to an unapproved part/fluid. PROVE. This has been law since 1975 and the Magnuson Moss Warranty act. Yet we still get internet advice like it’s from the 1960s.

 

For a hybrid, if a person uses 0w30, would there be any concerns that would not be adequately addressed?

 

Why wouldn't you follow the owners manual and move on with life. 0W-20 is the only viscosity stated. This is a Toyota, not a Ferrari.

 

🤣🤣🤣

 

and Lexus recommends 0/20 and nothing else and so do AI chat GPT

 

Still using the recommended viscosity oil for my car as it is still under Lexus Certified warranty.
I am however changing my oil and filter every 6 months or 6,000 miles in light of recent Toyota and GM engine issues.
Maybe this is totally unnecessary, but the V35A is a very complex and expensive engine.

 

Are you sure?

 

My 2022 owners manual throws this vague little curve ball for those concerned that 20 is too low of a viscosity...

 

Because AI is of course the expert source to turn to here….

 

You mean a race car, a car driven in Europe, or a car used for towing? None of those apply in ANY of the cars sold in the U.S.

 

😂😂😂

 

I made no assumptions about the intent of what exactly Lexus meant when they referred to "operating at high speeds or under extreme load conditions" without definition in my US-based owner's manual. Just pointing it out for those who may feel their driving style applies to the statement in the manual.

 

Can you define Toyota/Lexus definition of "extreme load conditions"?

 

Towing