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What grage of gas is required for 03 CTS ?


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page 6-3

Gasoline Octane

Use premium unleaded gasoline with a posted octane of

91 or higher for best performance. You may also use

middle grade or regular unleaded gasoline rated at 87

octane or higher, but your vehicle’s acceleration may be

slightly reduced. If the octane is less than 87, you may

get a heavy knocking noise when you drive. If it is bad

enough, it can damage your engine.

http://www.gmprotectionplanwarranty.com/owners-manual/cadillac/2003-Cadillac-CTS.pdf

Bruce

2016 Cadillac ATS-V gray/black

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