Systems & Propulsion

Practical Sailor technical editor Drew Frye sifts through the remains of several weeks of testing filters. In addition to the oil filters featured in this month’s issue, Frye also looked at fuel filters for a future report.

Marine Oil Filter Comparison Test

Aftermarket Fram and Sierra oil filters don’t pass muster with Practical Sailor testers.

We’ve followed countless debates about the best engine oil and the right time of year to change it, as well as quite a few debates about oil analysis. Just as controversial is the advice on oil filters, which ranges from a blasé recommendation to use whatever fits, to an adamant insistence to use only original equipment manufacturer parts (OEM). Because the oil filter is sealed in a cartridge, unless your filter leaks oil into the bilge we never actually know if it did its job or not. Given the filter’s important role, this is unsettling.

Continue Reading

More Systems & Propulsion

Air Conditioning at Anchor

 Subscribers OnlyWe often get this question. “My car has air conditioning when I’m running down the street so why can’t...

How To Connect Small Wires

 Subscribers OnlyThe popularity of micro-electronics and LEDs has greatly increased the number of small wires on board, and whether...

Seacocks for Thin Hulls

 Subscribers OnlyA proper below-the-water line sea cock consists of three parts: the outside portion or mushroom, which threads into...

Stuffing Box Care

Only boats with inboard engines have stuffing boxes. To locate yours, trace the propeller shaft from the transmission...