I use delo 400. Its not an i6 lol but bearings always look great on tear down. The n-14 will be gettin it soon too.
But i may try schaeffers in the puller some next season. One thing about heui is you actually can tell a difference in some oils.
Schaeffers Supreme 7000 has been my favorite. I have also run Brad Penn, Mobil-Delvac, Valvoline Premium Blue and AMSOIL Marine 15W-40..all great choices as well.
I use delo 400. Its not an i6 lol but bearings always look great on tear down. The n-14 will be gettin it soon too.
But i may try schaeffers in the puller some next season. One thing about heui is you actually can tell a difference in some oils.
The free stuff I get out of 55gal. drums from a certain location I can't mention. Standard 15w-40 CJ-4 from Olympus. Don't need anything special for the ol' 12v.