On Sat, 19 Aug 2017 10:08:48 -0400, Bill wrote:

On 08/19/2017 08:54 AM, Bram van den Heuvel wrote:
I admit I'm running off of fear since all the Toyota guys say that you must
use either Amsoil or Royal Purple or Redline GL4 75W90 in the manual
transmission.


Forum "blowhard know-it-alls" are a dime a dozen. I use whatever the mfg recommends.
I was a Toyota service manager for a long time. Synthetic NOT
REQUIRED