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[QUOTE=Koji_Online;299587]From the sounds of sierra's report it seems that the engineers forgot that most people in the US only have 91 & did not test extensively for this =P
I can't wait to see when Toyota releases an official statement to address our concerns!
How sierra pointed out this only happening once temps reach 140f makes sense for why most people (my self included) only hear the chirping after a while of driving; what is also interesting about that statement is the insufficient lube in US gas causing the washer in the pump to start making noise; this could explain the differences of when people start hearing the noise (200mi or 900+ like others) as gas quality for 91 can even vary depending on gas station/ additives; I only started hearing the noise past 1k mileage using Chevron 91; overall sierra's post seems valid; just need an official manufacturer statement to put us all at ease =D[/QUOT
Yes I agree. Its makes a lot of sense . So maybe they will suggest to use some kind of lubricant in the gas. Especialy for ppl who use only 91 octane ,
Or use a different kind of washer in the pump.
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