09 Toyota Corolla

wdn

Messages
1,672
Location
NH
What makes you think what is printed an Australian owner’s manual trumps an American owners manual? It is much much colder in America.
 
Messages
490
Location
Speedway, IN
What makes you think what is printed an Australian owner’s manual trumps an American owners manual? It is much much colder in America.
Because I’m pretty sure I’m smart enough to look at the graph provided that correlates ambient temperatures with viscosities. And I didn’t say it trumps an American owners manual. My Corolla’s not going to know if it’s in Speedway, Indiana or Brisbane, Australia. 90 F is the same anywhere. The engine is the same. So if I feel like running 20w50 in the dead of summer (I’m not going to) I know I can without harm. That’s it...your mileage may vary.
 
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