the problem is the price of super tech 10-40w 4 stroke oil has jumped to just under $9 a quart/ $36 per gal (up from $5.86 per qt less than 3 years ago) while oils like rotella t6 15-40w (which is api sn & jaso ma/ma2 rated) is $26 per gallon and spec wise 10-40 and 15-40 are so close it won't...
