About four years ago I upgraded my old style Racor
filter to the spin-on version. I installed two filter housings so that I can switch to the unused filter if the active filter becomes clogged. At same time I bought a dozen spare filters. I stored two of the filters in zip lock bags aboard the boat. The others I kept in the house.
Last weekend while looking through the boat spare parts
I noticed that the filters had rust on the plate that screws to the engine
. I was surprised that a product made for the marine
industry would be made of mild steel
. I live about four mile from the Gulf of Mexico
. When I got home, another surprise, all nine spares show rust.
On Monday I call technical support at Parker Racor
. I explained to the technician that I was surprised with my discovery. I explained to him that many cruisers stock up on items like filters for extending cruising. His only response is that the filters are guaranteed for one year and that I could talk to my distributor.
Now I know that 4 years is a long time and had I known that the filters had mild steel
components I wouldn't have bought so many but my questions to the members:
Do you see any harm coming from using these filters? Do you think that any rust particles will be trapped by the engine's primary filter thus protecting the injectors? And finally, should I apply a protective spray coating to the steel surface and if so what coating do you recommend?
Thanks for any advice, Ken