Re: Toyota Yaris 2007 Auto engine noise also where is the transmission fluid?
mine yar ist very quiet and powerful. Quiet at over 110KPH. Possibly substandard oil in there. In the States I would use no lighter than a 5W-30 - some folks promote the 5W-20 which will cause noise and engine death.
A nice Elf excellium 5W-30 should do the trick. 3.5L to fill
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