Originally Posted By: Shannow
Originally Posted By: Nate1979
Engines are not the same. For emission purpose and drivibility they are most often tuned different. That doesnt mean they will not run just fine on heavier weight but i call B.S. that they are the same engines.
Same bearing diameters and lengths, same clearances, same pistons and rings, same thermostat operating temperatures...I call B.S. on the B.S.
Different advance curves and injector timing can't possibly change an oil grade requirement.
edit...sorry, the oil cap IS different between the US sold engines and the Australian ones...ours says "oil", or has a picture of an oil can...yours has a grade, and often it's an economy grade
Shannow's logic cannot be refuted.