90% on short trip. What to do to protect engine?

[gid]

short trips lead to fuel dilution which can weaken oils protection . So I would stick with a 5w-30 in a inexpensive synthetic oil and change out at little less than the 5,000 mile interval . Not sure if SHELL synthetic is as cheap for you as is here . That little 1.3 works even harder than the 1.5 down there .

[talnlnky]

I don't know if i'd be suggesting 0w-20 or 5w-20 to this guy given he lives in Australia... and its summer there for him right now.

c'mon people... he's southern hemisphere, seasons are backwards to us northerners

[SilverGlow]

Originally Posted by 1stToyota

Correct. And I don't know why he suggested 0w-20 in his reply...that's very bad advice. The Toyota TSB that he's referred to many times clearly states that 0w-20 is not recommended for the Yaris 1NZ-FE motor.

You are consistantly wrong. Again.

The TSB IN FACT says we can use 20 weight oil in our Yarii, 2007 and going forward. The special note at the top are for vehicles NOT COVERED by that TSB, and for those, one should look at their owner's manual, and/or what is printed on the filler cap for the proper oil weight.

[jambo101]

That lower number (0w-20 or 5w-20) is only relevant on startup,once the engine warms up the higher number is the relevant oil viscosity

[1stToyota]

Originally Posted by SilverGlow

You are consistantly wrong. Again.

The TSB IN FACT says we can use 20 weight oil in our Yarii, 2007 and going forward. The special note at the top are for vehicles NOT COVERED by that TSB, and for those, one should look at their owner's manual, and/or what is printed on the filler cap for the proper oil weight.

Yes, 5w-20, not 0w-20, WrongGlow. Check the 0w-20 section. See the Yaris listed there? Of course you don't.

And I never found the part about vehicles "NOT COVERED" ...I think it states "each vehicle" after stating: ILSAC GF–4 can be used in all Toyota and Scion engines.

It's dealing with all Toyota and Scions, not Hondas and Hyundais