Hi Chuk,
Thanks for the suggestion, I have already changed out the fluid in the transmission and rear differential. You are correct, the manual transmission calls for 5w20. I used Red Line full synthetic off of a recommendation on an older post. Smoothed out my shifts noticeably when the engine is up to temperature - not much difference when cold though (still have to take an extra second or two to go into 1st at a stop).

Ryan