bloomjlexus Posted January 20, 2009 Share Posted January 20, 2009 Hi all - Just wanted to introduce myself. I'm a new 2008 GS 350 owner. The car is Smoky Graphite / gray with Nav and 18" wheels. Love the car so far after 1 day of ownership! I've been hunting on the forum here a little. What do I need to know? Please feel free to give me tips and tricks. I'd like to override the NAV lockout but I'm not going to cut wires to do it. Also, what fuel do you run? The dealer says pick one octane and stick with it - he said 89 does fine. What does ownership experience show with regards to MPG change and Performance with lower grade fuels? Thanks, Joshua Quote Link to comment Share on other sites More sharing options...
The G Man Posted January 20, 2009 Share Posted January 20, 2009 There is a plug in module for the nav over ride you can buy, I would stick with 91 octane, 89 dont really save you much money. Quote Link to comment Share on other sites More sharing options...
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