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2000 red STS
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155 Posts
Discussion Starter #1
Hello, i have a few questions about a 2000+ deville..i am looking at DTS models and i heard that in 03 that they could run on 87 octain and not just 91?
 

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2010 CTS
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74 Posts
I have an 02 DTS and both the dealer and manual say to use 87 octain. It runs just fine and got 25 mpg on a 5500mi trip last month
 
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