When I owned a 2006 lexus rx400h, I used mobile 1 extended life, 100% synthetic oil and a Mobile one oil filter. Mobile claimed 15000 miles between oil changes. I followed this plan for 7 years and put 130000 miles on the vehicle. Never had a problem and never looked back. Now I have a 2013 rx 350 and I will follow the same plan for this car. I don't have a doubt about Mobile one. I do all my own oil changes!