The ES350 gets the same oil and filter as the Toyota 3.5L V6. That's
why Toyota strictly prohibits their Toyota service manager from taking
in Lexus. $$$$ Cha-Cha-Cha-Ching $$$$$
That said, oil degrades according to your driving pattern. If you
frequently drive local/short trips in cold weather, 3000 miles should
help the engine live a longer life; longer distances, at least in GM
cars, oils can last up to 12,000 miles.
However, Toyota lowered the 7500 mile interval to 5000 miles in 2004
because of sludge concerns. So maybe 5000 is a good number or every 6
monhts.
----------------------
http://findarticles.com/p/articles/mi_qn4188/is_20070326/ai_n18758842
"Toyota Motor Corp. reduced its change interval from 7,500 miles to
5,000 in 2004 in part because it found that more drivers ran their
vehicles under severe stop-and-start and short trip conditions that
cause oil to deteriorate more quickly, said company spokesman Bill
Kwong."
----------------------
http://www.gm.com/company/gmability/environment/news_issues/news/simplified_maintenance_qa_040104.html
* How many miles can I expect to go between oil changes when using
this system?
The beauty of the GMOLS is that it will automatically adjust the oil
change interval based engine characteristics, driving habits and the
climate in which the vehicle is operated. For instance, mild highway
driving in a warm climate will maximize the interval between oil
changes. Depending on the vehicle, this could be in excess of 7000
miles and as high as 12,000 miles. On the other hand, short trip
driving in cold a climate may limit the oil change to 3000 miles or
less. In general, most people that drive a combination of city and
highway find that the GMOLS will indicate an oil change every 5000 to
6000 miles. Additionally, most people maintain consistent driving
habits. Therefore, their mileage between oil changes will be
consistent. Changes in climate will affect this somewhat.
Post by Elmo P. ShagnastyWho in the hell goes to a Lexus dealer for an oil change?
It's just a car, for God's sake. The $30 oil change at your local
trusty neighborhood service station is just as good for your car as is
the $140 oil change at the Lexus dealer.