It is worth studying the equivalent part numbers really closely. This little tale of the "Oil Change from Hell" is from an early issue of my Nomadness Report
. As the debacle (and near disaster) unfolded, I posted here on CF and got lots of good advice; here is the very short version, along with a photo
of the gasket
that still sends chills up my spine whenever I look at it:
Here’s a warning for anyone who has recently purchased a boat... assume nothing! I certainly should have known better, but when I did my first Yanmar oil change a few months ago, I just looked at the existing Fram filter (PH2856), crossed it to a locally available NAPA 1381 (Wix), and did the job. Within seconds, all the engine oil exploded into the bilge with a horrible noise, and I’m indebted to George Pell, my dock neighbor who was helping, for thinking quickly about shutdown and bilge-pump disabling before things could get really messy.
Looking closely, we discovered that the new gasket was only barely contacting the flange on the engine, and that the old one (which I had been using for about 140 engine hours including dangerous moments on lee shores), was the wrong filter type! It had never even occurred to me to question something that came with the boat, but you can see in the photo that the indentation is not only unevenly distributed around the ring but also a mere 50 thousandths of an inch wide at its narrowest. That bit of rubber is what was holding my oil in since I bought the boat.
The correct filter for the Yanmar 4JH-DTE is the Yanmar 129150-35152, which is now in stock. Removing 7 quarts of oil from the bilge is not an experience that I wish to repeat (but at least it shot down instead of up into the pilothouse!).
Lesson learned, but of course it begs the question: what are all the equally scary things that I don't know yet? *shudder*