Hey, we're still on track. @AidanGoltra brought up a good point. Sunflower oil is one of the worst oils when it comes to omega-3 to omega-6 ratios. Humans evolved to consume omega-3 and 6 at basically a 1:1 ratio, with acceptable variation anywhere from about 4:1 to about 1:4. Sunflower oil is about 1:70, heavy on the omega-6 side, which is ridiculous and much too likely to lead to tissue inflammation and related illnesses.
Disregarding any other nutrients, I think supplementing EPA and DHA is well advised if Soylent is one's primary source of lipids. That is the case with me now. When I go back to a legacy food vegan diet I can include plenty of palm, coconut, olive, or flaxseed oil, but since I'm only consuming Soylent now, supplementing is called for, and I'd advise anyone else to do the same if they aren't getting a good balance of the fatty acids.