My Rx 400h owners manual says change oil every 5000 miles but lexus website says this:

"Determining The Proper Maintenance Interval

Your Lexus should receive scheduled maintenance every 5,000 to 7,500 miles (or every 4 to 6 months), depending on your circumstances and driving habits.

5,000-Mile Or 4-Month Intervals

Use 5,000-mile or 4-month intervals if you primarily drive your Lexus under any of the following conditions: - Driving on unpaved or dusty roads
- Towing a trailer or using a camper or cartop carrier
- Repeated trips of less than five miles in temperatures below freezing

7,500-Mile Or 6-Month Intervals

Use 7,500-mile or 6-month intervals if you primarily drive your Lexus under conditions less strenuous than those listed above."

source: http://www.lexus.com/models/warranty_vehicle_protection/maintenance.html

Now I don't drive on dusty roads or tow anything or make repeated trips less than 5 miles in temps below freezing. So what do I follow? My owners manual or their website?

Lexus service is not cheap and I don't want to pay 50% extra (because of more frequent visits) if I don't have to.

Any suggesstions?

btw, how much does it cost for a scheduled maintenance at a Lexus dealership? I have no idea as I haven't put on that many miles yet.