Replacing O2 Censor

[eswint2010]

I have a 2001 lexus is300 with 137,000 miles on it and im not really getting the best gas mileage, ive been told that changing my o2 censors will help.

Anyone know why brand i should buy and maybe some prices?

And if anyone has any other suggestions on helping my gas mileage my ears (or should i say eyes) are open.

[tofu]

If your CEL is on for bad o2 sensors then you will not get good gas mileage, but I would not replace them if your car doesn't have CEL.

It could be many things that your car doesn't get good gas mileage such as dirty air filter, bad spark plugs, etc...

[eswint2010]

I'm Fixing to Change The Plugs With Denso Iridiums and the air filter is fine, ill change those and see what it does