Automobile Oil Filters for Outboard Motors

Though it’s not a widely known fact, it is possible to use an automobile oil filter in your outboard engine. Marinas and outboard motor manufacturers will suggest the use specialized outboard oil filters, however these are often more expensive, and unnecessary. If your engine uses standard two cycle outboard oil, just find an automotive filter that has the same thread and diameter. Installing it is the same as you would expect from a filter, but remember to rub a small amount of oil on the bottom of the filter before installation, as this will help to lubricate it and prevent it from sticking.
It’s also best to avoid filters with Teflon built in, or a Teflon additive. Oil filters also have an expiration date, so ensure you don’t go beyond the date or you will risk having a broken filter and engine problems.



When switching from conventional to synthetic oil in your outboard motor, there are a few potential issues of which you should be aware. First, recognize that once you start to use a synthetic oil, it’s near impossible to go back to a conventional oil. This is because synthetic oils swap themselves with the plasticizers in the seals; should the synthetic oil come out, the seals will shrink and crack because the plasticizers are gone. Depending on the type of outboard motor you own, using a full synthetic, like evinrude XD-100, can be better than a partial synthetic like evinrude XD-50. You should always be mindful to check with the manufacturer or consult an expert before switching.



With the whole world going green, scientists have been hard at work developing synthetic forms of oil. One such oil scientists have been working on for some time is a vegetable oil similar to the stuff many people used to cook their food. This vegetable based chemical oil promises a cleaner more renewable alternative to petroleum-based motor oil. In addition, it is possible that this oil could be produced cheaper, and offer a number of performance enhancing benefits such as preventing engines from overheating, protection from corrosion, and better lubrication.


Now and then with certain models of outboard motors, the oil injection system will appear to not work properly. However with most oil injection systems, this is a wrong diagnosis. It would seem that an outboard motor can damage itself by running lean, but in actuality, an engine wearing down due to running lean is not related to oil injection. Bearing failure and seizing in engines are oil related; running lean is a carburetion issue.