OK...I'm about 4000 away from my first oil change, but I am very curious about synthetic oil. I know that it is better than std oil for its reduced friction (resulting in improved mileage)....and I know that if I want to do synthetic, I should choose NOW rather than later and possibly risk seal/ring damage. I know it will lengthen the life of my engine. I also know it costs a bit more.

SO:

o Is is possible to request synthetic at the dealership?
o Does the use of synthetic affect my warranty?
o If I go to an authorized Toyota service shop and have them change it with synthetic, what do I need to do to CYA regarding the warranty?
o What brand/weight of synthetic should I use?


I assume using a Toyota oil filter is the no-brainer.

Any recommendations/anecdotes are appreciated!

I put Eneos Synthetic oil in my 09 . they make a 0W20 & a 5W30. This oil meets Toyota spec. if not exceeds it