Has anyone tried different types of fuels "87, 89, or 91 octane" to see if the is a difference in performance or mileage.
With the price of fuel going up each day it might be nice to save a little money if it would NOT hurt the motor...
The XLR is designed to run perfectly fine on 87 grade Unleaded fuel. But if you want the optimal performance It is sugested to use the high grade of 92-94 octane depending on whats available in your area.
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
Cadillac XLR Forum
A forum community dedicated to Cadillac XLR owners and enthusiasts. Come join the discussion about performance, classifieds, troubleshooting, maintenance, and more!