Tks everyone all very helpful answers.. But after much consideration, I will no longer buy the ISC, but instead I am going to buy the is350 sadan..

I live in Michigan so the practicality of me buyin a sadan with AWD seems to be a better choice. Michigan has really harsh snow so driving a convertible RWD I think sounds like a bad idea..

I'm 27 excellent credit history and have no accidents or tickets so I think my insurance will be alot cheaper for a sadan then a coupe..

Hopefully one day when I can afford a ISC as just a summer car and have a different winter car then I will buy it. But as for now.. I think I will be happy with the sadan when I purchase it then April when there's no more snow

 

Do any of you use less than the Premium Unleaded gas in your 250ISC?

 

ABSOLUTELY NOT!!! It requires it. Just spend the extra and follow what the manufacturer tells you.

 

I know there will always be some kind of debate, but it's only Premium for all my Lexus vehicles.

 

There's absolutely no reason to not put premium gas in an engine designed for it when the manufacturer tells you to unless you're stranded in the desert, running low on gas and the only service station around only has 87.