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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel > Yanmar oil filter question
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Thread: Yanmar oil filter question Reply to Thread
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Topic Review (Newest First)
12-13-2011 01:15 PM
copacabana I'll look for Bosch. Thanks Hellosailor!
12-13-2011 01:13 PM
copacabana Thanks RichH. I will do exactly that when I order filters next time. The same applies to V belts... I paid more than 50 dollars for a Yanmar raw water V-belt (tiny little belt actually). I needed one ASAP and the local Yanmar dealer had it in stock. Suffice it to say I just stocked up on the exact same belt for less than 6 dollars by buying through my local washing machine parts shop. Go figure! I now have 5 belts in my spares kit.
12-13-2011 01:09 PM
hellosailor Mark-
Bosch makes quite a line of filters, I don't know how their marine filters fit into the bigger picture. I'm thinking of Bosch and Mobil1 automotive filters, which used to run about $6 each instead of a more common $3-4, and one of them literally doubled their price last year, same product apparently but the box went from cardboard to see-through plastic. (Oooh, pretty pretty, shiny shiny). Both brands had detailed specs on micron ratings (absolute and typical) and in auto filters--both were way ahead of the pack. Which might just be like the argument who needs a two micron diesel fuel filter. (G)

Not that it matters much. Unless you mail-order filters by the box, it seems that whatever brand you want, isn't in stock. If it is, clean 'em out while they are.

Everybody puts down Fram as cheap...but the last old-fashioned machinist I knew used to swear by them, sold 'em and used 'em for 30+ years and his rebuilds didn't fail from them. Who knows?
12-13-2011 12:45 PM
RichH For 'filter look-up and 'cross reference', go to WIX filters, WIX oil filters, WIX air filters, WIX fuel filters, WIX Heavy Duty Oil Filters : Filter Look-Up ----> offhigway ----> 'marine' ----> engine model number .... click on the 'underlined' part number to get the 'filter technical specifications' - ÁM 'rating', Beta-Ratio (efficiency), bypass 'set pressure', envelope size, connection thread size.

Then go to your favorite 'auto parts store' and have them cross reference the above number .... usually they will have to 'special order' for such small diesel engine filters .... but the cost will be a fraction of what you will pay for "severely $ marked up" private-labeled filters.
If the engine is still under warranty, dont believe the 'crap' about being required to use a 'branded' filter .... as that is illegal and is entirely contrary to the "Fair Trade Laws".

(I have no connection to 'Wix Filters', etc.)
12-13-2011 07:49 AM
copacabana Thanks for the informed advice. I guess I'll use the spare filters I have on board and then start buying Yanmar or other brands that have the same specs. I just hate paying US$25 for a Yanmar oil filter when the Fram sub costs about 6 dollars ...
12-13-2011 02:36 AM
MarkSF
Quote:
Originally Posted by hellosailor View Post
I'm not a great Renault fan, but by and large if a filter is about the same size, it may have the same internals, and if the filter fits properly, that's what counts. There are A LOT of interchangeable filters for oil, manufacturers want you to believe only gen-you-whine parts are good but when it comes to oil filters, almost any brand name will also carry a warranty against engine damage from a filter failure. Which is a very rare event, but happens even for brand name filters.

They're not all the same--but there's no real way to tell them apart, other than "does it meet the spec for this use" (i.e. pressure and bypass filter and capacity) and changing it often enough.

Some filters will tell you that they are rated for xx% effectiveness at xx microns particle size, but most won't. Mobil and Bosch are among the few that do, and they charge dearly.

NAPA stores tend to be quite resourceful about substitute parts and cross-indexing them.
I just paid $3.64 each for 3 Bosch filters for my Universal. Is that dear?
12-12-2011 11:23 PM
FSMike I once owned a 1500 cc v-twin motorcycle. The aftermarket oil filter was about 1/2 the price of the factory branded one. The factory filter had an anti-drain device which prevented the oil from draining down into the crankcase. This ensured that the engine still had lubricating oil throughout the next time it was started. The after market filter did not have this feature.
Not much relation to marine diesels, just wanted to show that there can be more than one way for filters to differ.
12-12-2011 11:13 PM
CalebD Paging RichH, clean up in aisle 2.
Oh, I see you have already cleaned up that mess.
I knew I had heard this bit somewhere else before and it was from you.
Our resident expert on filtration: RichH!
Rearrange a few letters and you get: flirtation.
Thanks for confirming my hearsay.
12-12-2011 09:34 PM
RichH In engine oil filters, the filter material is produced essentially by one world company -Alstr°m of Finland; almost all filter 'assemblers/builders' buy this filter material and then 'assemble' the filters.
Renault filters call for a 20ÁM nominal rated filter material with a bypass pressure relief of 16-19 psi.... and that is the exact same specs. for Yanmar 3GM .... 20ÁM nominal @ 16 psi bypass pressure.

Yanmar makes NO filters but buys all its filters as 'private branded' made by various automotive filter manufacturers.

An engine oil filter is a very crude filter because its a 'recirculation' filter and constantly re-filters and re-filters the same oil over and over again .... so that the 'resident' particles in the oil are probably approaching 1ÁM in actual size ... the carbon fines from combustion are well below 1ÁM and thats why such a filter will allow the 'black' to build up. Changing the filter often is THE most important, ... dont worry about 'brand', use the cheapest (non-Chinese made) you can find.

Its the 'filter material' that is THE important aspect of an automotive oil filter ...... bobtheoilguy.com has no idea what he's talking about and he's skewing the data towards one certain 'brand' do consider that website nothing more than 'slick marketeering'.
FQWI - Im not directly involved in automotive filtration but was deeply involved in 'filtration engineering' for almost 40 years.
:-)
12-12-2011 08:03 PM
hellosailor "I think the actual filter element for most all brands is made by the same company so the outside label matters little to none."

Sometimes it is worse than that, with the same label, same part number, made by different jobbers so the internals can vary as well. Or even with a prime maker, they may change internals from time to time.

IIRC there's a chunk about filter tear-downs from "bobtheoilguy" on the web, he's literally cut apart dozens of filters to get some idea of just what is inside them.

If you've got an oil pressure guage and it doesn't object to the new filter...I'll spend a buck or two more for a brand name but at 4x the price? I'd bet on filters spec'd for similar displacement engines as being a safe bet. And you know what thye say, what happens in Vegas, stays in Vegas. Including bets on oil filters. :-)
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