87 or 91 please help ?

Asked by TURKI Apr 30, 2018 at 03:50 PM about the 2009 Cadillac DTS Luxury I FWD

Question type: Car Customization

My car is cadilac sls 2009 Can I Use 87 Or
Do I Have To Use Premium Fuel ? PLEASE
HELP ! ( this car spicail model i think make
sure before answer please) this SLS not
DTS i don't see my model in list and i dont
know about trim :( please see this link guys
http://automiddleeast.com/2009/09/08/ne
w-cars/cadillac/2009-cadillac-sls

2 Answers

F_O_R answered 5 years ago

Premium is best. If you look in the owners manual or on the gas cap it probably says 91. If you drive with a lower octane gas the performance and mileage may be reduced. If it pings on 87 you could damage the engine.

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