I wanted to know how much oil my lower unit holds? It a 79 evinrude 115 hp. I know your supposed to put oil in the bottom hole until it comes out the top hole, I just want to know how much it holds. C. Chris1956 Supreme Mariner. Joined Mar 25, 2004 Messages 28,018. Jun 21, 2008 #2. Johnson & Evinrude Outboards . Lower unit oil change on 1987 SPL 88 Horsepower V-4 outboard. Lower unit oil change on 1987 SPL 88 Horsepower V-4 outboard. You'll need three of the 10oz. tubes to do the job.I believe your lower unit capacity is 22 oz.If you haven't bought it yet,consider the penzoil hi vis gear lube they sell at wal-mart.
I want to change my 2014 Evinrude Etec 115 horse's lower unit oil this weekend. I used to own a 2000 Mercury 150 horse and I used the Mercury brand Quicksilver lower unit oil which I still have a bunch of.Can I use the Quicksilver lower unit oil in the Evinrude or should I use only Evinrude brand.. The brand is not near as importatnt as regular maintenance and good seals (no water in lower unit). I have been running castrol marine grade synthetic in my 200 hpdi V-max for 6 years. I drain and refill once a year wether it needs it or not. That oil comes out as clean as it goes in. Pretty amazing stuff.