Best oil for 3s-gte? Options

[dudeofchaos]

I've always used Castrol Syntec but I've heard the Castrol Magnatec was very good at preventing engine wear due to cold start, though I believe there is only part syntec magnatec, I've always prefered fully synthetic oils.
Any one recommands one of them or any other brand? I will use 10w40 btw.
People seem to never be accurate when they talk about engine oil..

[Sunny]

Hi,

10W40 is fine, but note that this has nothing to do with the quality that are just viscosity grades
for quality have a look to the ACEA and API specifiacitions

there is nothing wrong by using fully synthetic oils, they just becomes faster older due to the aditiv package -> aditives die faster against the base oil, so if you have a high VI you have more aditives in the base oil
-> example: a 10W60 has more aditives against a 10W40

i just can recomend not to use a lower viscosity of 10W, the 3S-GTE is a old engine and not developed for fuel-efficient engine oils, you are also run more in danger of oil film breaks * so
bearings, cams and turbo will thank you this especially when you drive hard

for example, when i drive 0W40 my engine eat the oil but with 10W40 i lost nearly nothing

* a 10W has typically a higher VI base oil against a 0W

unfortunelty my english isn't that perfect but i hope i was able to explaine you a little bit

greetz