You could hear a pin drop when the almighty "handogg"
<riefachiefa@hotmail.com>  addressed his adoring fans with these
immortal words:

..deserts get cold at night.  I wouldn't change your oil weight unless
your local Lexus service department recommends it.

..no

...keep it out of the sun..no really. It'll fade the interior.  Get
tinted windows.

..there's something else going on.  If your mpg dropped by 50%, it's
not the a/c that's causing it.  Modern compressors put very little
load on an engine.  The mpg difference is about 1 mpg, not 10 or 15.

you're welcome.

Your owner's manual should indicate what type of oil to use, based on
anticiapted ambient temperatures.  Assuming that the air temperatures drop
at night, you may wish to stick to 5W-30.

No, stick to a 50-50 mix.

Keep your tires inflated about 4-5 PSI above the manufacturer recommended
pressures listed on the driver's door.

Make sure that the AC is properly charged.  Take a look at the sight glass
in the receiver drier.  The receiver drier is a cylindrical canister mounted
in front of the radiator/condenser with a round glass window on top.  With
the AC compressor engaged, it should look like water flowing past the
window.  If you see foam, then the AC needs recharging.

Hi All.  I now live in Las Vegas where the the temperature runs ove
100 degrees regularly.  I used to live in Chicago

Should I switch to 10w30 ?  I currently use synthetic 5w30

Should I change the radiator coolant to a different mix

What else do you recommend I do to the car to help it perform in th
110 degree weather

Also, the car is burning almost twice as much gas as it did in chicago
I attribute this to the AC running all the time.  Is there something
can do to keep the car from burning so much gas

Thanks very much
No need to switch to 10w30 oil what your currently using is very goo
to start with. as far as the coollant is concerned if its been more than 2 year
since you last flushed the coolling system do it now! using
a 50/50 mix. living in that kind of hot
enviroment for an automatic transmission is a killer for it hard on the tranny oil pretty

much cooks it in no time heat kills automatic trannys! highly recommend a transmission cooller for your lexes thats a wise investment. your fuel mileage may
indicate a problem remember your A/C is constantly on dont no your driving
habits but check your tire pressures  should be generally around 30psi or it could
be that "Las Vegas heat wave drying up your gas!"   =D  hah

--
johnin