Quote:
Originally Posted by shags
as a new 2015 lfx owner i have heard many conflicting things.. iv'e always used 91 in mine for the last month since i have bought it then someone told me the motor is only tuned for 87 and putting 91 or higher in won't do anything unless you do a fuse pull with 91 in and let it set then the computer will change is this true ?
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I've been using regular since I got the car. No need to throw money away when you don't need too. Car doesn't run slower or get less MPG'S because I'm using regular. I know people swear on premium like it's the holy bible, but for the V6 you will be fine with regular.