Gas 87,89,93?
#1
I have a non turbo rx and it seems that every time i use the 87 octane fuel, i will start to break down on the highway in fifth gear. I will have to downshift into fourth then gain speed to switch back into fifth. But when i put the 89 or 93 in it seems that the problem doesnt occur. I have heard that the 93 is better for the turbo and the lower grades are better for the non turbo. So i guess ill just stick with the 89. Anyone have any ideas why the 87 breaks down?
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