This may be old news for some of you but I came across this at the parts house earlier. Available in 5w30 and 0w20, both full synthetic. I may start using this oil in the wifes Mercury.
https://rotella.shell.com/en_us/pro...PA-HzrARQ-Q8JTXd_HYkx53rsFxH7bH8aAtIbEALw_wcB
https://rotella.shell.com/en_us/pro...PA-HzrARQ-Q8JTXd_HYkx53rsFxH7bH8aAtIbEALw_wcB