My local TSC had Rotella T6 in stock yesterday; however, the pre-tax price for a 1 gal jug was $32.99. I didn’t expect that, although perhaps I should have. So, for the first time ever, I read the fine print on the Rotella T4, and to my amazement, T4 is JASO-MA/2 certified. Given that these days I have minimal cold weather exposure, and over the past few years my riding has been limited (by issues beyond my control), the 15w/40 T4 got the nod. The T4 was also on sale for 10% off the listed pre-tax price of 19.99. So, we shall see.