Cut these from my boat which has a 2003 4.3 Mercruiser in it. The oil filter was only used for one season and maybe had 30 hours on it. It seemed to have a fair bit of fuel smell though. I’ve been running Rotella T4 15w40. This change it got the same oil but with a Fram Ultra this time. Really impressed with the tough guards lately though. Included it pics of the fuel filter. It has a few seasons on it. Pretty interesting as they call it a water separator as well but I don’t see anything like a screen or anything to do that. It’s also such a big can for a tiny little filter, the can is about 4” tall. The filter media is about an inch tall.