I absolutely would not trust dealer techs to not screw something up... and R&R isn't necessary unless your engine already has a crap load of varnish and sludge from the factory, which I'm pretty sure it doesn't. Changing it often is more valuable than starting with a heavy detergent package if there is an extra cost of R&R.Toyota has included lifetime oil changes for us.
However we supply the oil Valvoline Restore & Protect and they supply labour and filter every 6500km so we are pleased with this arrangement.
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