Well, talking about Ford engines, when Ford introduced Zetec engines back in the late nineties in Southamerica, they recommended the same oil viscosity of the old Endura -15W 40-, even though both engines differ greatly in every aspect... What could happen to a Zetec engine if it gets 15W-40 oil, instead of 5W-30, considering that in some regions summer's temperatures normally climb well over 35° C... or maybe Ford did the right thing?
Thank you all guys for your opinions.
Thank you all guys for your opinions.