I just purchased my 2013 TRD DC Tacoma. I asked the dealership when I was there for my one month check. He said synthetic every 10,000 miles.
The Tacoma 2.7 is not (yet) certified for 10,000 mile oil changes.
It has shipped with synthetic for years and has always called for 5k changes.
The dealerships are getting confused now because more and more Toyota models are getting synthetic and DO call for 10k intervals, but the warranty on your Tacoma requires 5k changes.
|Synthetic works better the longer it it used. Or so I have read.|
Oil begins getting dirty and breaking down the first time you start the engine. It does NOT work "better" when used longer.
It works better than conventional oil running the same intervals, but synthetic oil with 7k on it is not "better" than synthetic oil with 4k on it.