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Discussion Starter #1
for a 99 seville, is it a MUST to use premium gas, and do you really think it helps? and how are maintenance costs, relatively? thanks
 

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White Diamond '03 DHS (with DTS floor shift)
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No, you do not have to use premium. :horse: Do a search.

Like any car, maintenance varies. Some never have a problem and some are plagued.
 

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Discussion Starter #3
i appreciate it. is the 1999 seville known for any particular problems as opposed to other years? im about to buy my first one and just want to make sure..thanks
 

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White Diamond '03 DHS (with DTS floor shift)
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Have a mechanic do a cylinder pressure test to test the head gaskets or at least have the coolant tested for exhaust gases. Head gaskets can be a problem, especially if the cooling system has not been maintained and are very expensive to fix.
 
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