Originally Posted by markrivers
unless this practice can be backed up with literature which provides evidence of better performance, you're just throwing your money away.
if you're using synthetic oil, which is the recommended one
there's no need to do oil change every 3,000 miles or even 5,000 miles.
This may not be accurate. To maintain the warranty on the Lexus, you need to stay on the Lexus maintenance schedule (at least close). So low mileage drivers will be replacing their oil on shorter maintenance intervals. If you only use the car for 2,500 miles a year, I don't think that you can wait 4 years for your first oil change.
Plus, the OP is a Canadian and they have shorter maintenance intervals for oil changes in their Lexus maintenance schedule. My advice on oil changes is to get them performed as often as recommended by Lexus in your Canadian owners manual. The manual will state the requirement in terms of both TIME and MILES. So whichever comes first, take your car in close to that triggering event. I'm not familiar with the Canadian maintenance requirements, but if it says every six months, then change the oil every six months unless your Lexus dealership advises otherwise.