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Old 07-10-2016, 05:57 AM   #21
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For those with the desire to keep the oil clean , catch the "fines" that simply flow thru a std filter , bypass filtration could vbe a solution.

The rolls if paper towels stuffed into a can do not impress me , but the use of centrifugal lube oil filters does.

Happily they are made for big trucks so can be had at not Yacht pricing.

Still will be about $700 per engine plus installation.

Here is one example that is common,

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The Spinner II centrifuge is a highly efficient bypass filtration device. It diverts a small sidestream of oil for processing and returns clean oil to the crankcase.
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Old 07-10-2016, 09:55 AM   #22
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if you are new to doing your own oil changes, remember that you must fill the new oil filter with fresh oil before you install it. Other wise the oiling system will run dry for a few seconds as the oil pump fills the new filter.
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Old 07-10-2016, 11:00 AM   #23
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tadhanna,
I do it too but it's probably a bit of a fettish and likely is of no benefit.
I thought for most of my life that on engines w the spin on filter sideways kept the oil after shutdown and while not running. I have such a filter screwed onto the side of the engine. When I bought the engine (repower) I installed a remote filter w the threaded end up thinking the oil would drain into the bilge w the OEM filter on the side of the engine. Had oily bilges from leaks to the remote filter for years. Finally tore it out and started using the standard filter. The first oil change w the side ways filter I got out an extensive aramada of paper toweles and rags plus a little tray that I hoped would catch most of the oil. When all ready I unscrewed the filter on as quickly as I could. There was no oil to catch. I was immensely pleased that my oil change was now so simple but worried a bit about the dry starts my engine was now going to experience. Needlessly I'm sure.

But how many millions of engines are built this way? And then there's the guys that think that w the standard engine startup the engine experiences high degrees of wear before the high pressure oil reaches the bearings ... and OMG the last bearing on the oil gallery. Just nonsense. If it did any harm they just would'nt build engines that way ... IMO.

There are some things that clearly seem to be thus but are really so. However when I'm presented w an oil filter that is mounted w the open end up I definitely fill the filter w oil. I just like to get things as right as I can but in this case it probably does no good at all ... but I still fill the filter w oil. And I put 25% of the oil in a sideways mounted oil filter as little or none drains out as the filter is screwed on. Especially if I'm quick about it.

So tadhanna I do it too. Remotely mounted vertical filters are typically larger (mine was) and longer periods of time without oil pressure at the bearings during startup so filling the filter w oil may indeed be worthwhile.

Another thing I always do is to pour a tad bit of oil in the "O" ring groove and wet the top of the oil ring w fresh oil. Leaks in the boat are much worse than leaks in your car.

Does anybody know of a quick lube oil change shop or station that fills the filters w oil prior to installation? I can't say "I have no idea" because I'm quite sure they just slap the empty filter on. I almost never go to those places as guys working at such places are very sloppy and careless re what I've observed and heard. Over tightening drain plugs is extremely common. It really applies that if you want the job done right you need to do it yourself. But sometimes even half-assed "professionals" have knowledge we don't.
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Old 07-10-2016, 11:53 AM   #24
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it seems nice to fill filter but some are hard to get to and screwing on a big full filter is an opportunity for several hours of clean up.


I disconnect the fuel solenoid and spin the engine on the starter until pressure is up. Let it sit to cool after 20mseconds of spinning. Soon enough the pressure will come up.
If you have run the engine to mix up the oil then the innards are recently lubed anyway.
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Old 07-10-2016, 12:14 PM   #25
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There are two reasons i fill the oil filter in my engine. The service manual for the 5.9B series directs you to do it. Second, I ran boatyards with service techs trained on Cummins, John Deere, Yanmar, Mercruiser and several others. In service schools they teach the tech to do this. Yes there are many engines with a sideways oil filter. Yanmar has several models i know of and so does Onan. In those cases I just add a bit of oil and hope for the best. You have to work with what is given to you..
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Old 07-10-2016, 12:19 PM   #26
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LOOK in a NAPA cross reference , some filters have built in check valves that make changes less messy.

A car drive thru oil change will not pre fill the filter,,, BUT the engine is at operating temps and there is an existing oil film on the engine internals.

The few seconds of no oil pressure, the engine parts slide , rather than work with a cushion of oil from the oil pump filling the bearing..
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Old 07-10-2016, 12:41 PM   #27
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And the drier (not totally dry) engine starts after a 100 to 200 hour oil change have as much likelyhood in damaging your engine compared to so much else that is more likely to happen, that a meteor strike is more likely to do it in
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Old 07-11-2016, 10:13 AM   #28
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Another possibility :

You indicated that you have an oil change system. While I have one, I only use it to remove oil and refill at the top of the engine. The pumps though are designed to pull oil out and push oil into the engine. The mechanic may have sucked the oil out of both engines and then stuck the discharge hose in a clean bucket of oil flushing the hose and pump back into one engine. By the time he switched to the second engine, the hose and pump were clean. My oil change pump and hoses might have a quart of residual if I don't make a major effort to drain it all out.

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Old 07-11-2016, 10:31 AM   #29
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If engines were damaged by the few seconds after a start without oil pressure, I would be rebuilding engines left and right. And I am not. Most of the engine I rebuild are due to water being where it should not be, and 99% of the time the bearings are perfect. Often they go right back in.

Ted has a good point about using the oil change system for a fill. First engine filled gets the dirty oil in the hoses. Could be it.

I pump out the old and pour in the new.
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Old 07-11-2016, 10:57 AM   #30
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Quote:
Originally Posted by Ski in NC View Post

Ted has a good point about using the oil change system for a fill. First engine filled gets the dirty oil in the hoses. Could be it.

I pump out the old and pour in the new.
Good point...the distance fro. Eng to pump is a factor if used to fill.
I agree w ski and add via fill vs pump...not a big chore
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