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12-18-2017, 06:42 PM
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#1
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Senior Member
City: Toronto
Join Date: Nov 2015
Posts: 271
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Changing Oil & Filter
Holy crap ! Just reading the operation and maintenance manual for my engines and run across an item regarding filling new oil filters with oil prior to install. I must admit that in all the years doing this on my boats it never occurred to me to do that, and come to think .... I never see a lube rack / garage doing this when changing oil & filter on a car. How serious of an issue is that ??? FB
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12-18-2017, 06:48 PM
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#2
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Guru
City: Kenai, Alaska
Vessel Name: Melanie Rose
Vessel Model: 1999 Willard PH
Join Date: Feb 2013
Posts: 1,236
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If you are like most and run your engine to warm the oil before draining it, I am pretty confident the residual oil will lubricate quite adequately as the filter fills and begins to circulate the new oil. I usually pour it about half full, spilling some onto the "O" ring so I can give it a finger swipe to lube the new ring before replacing the filter. JMO
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12-18-2017, 06:52 PM
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#3
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Guru
City: Gig Harbor
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 9,046
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I never did it on my sailboats that had horizontally mounted filters. However, on my Cummins I fill the oil filter before spinning it on. I don't thing it is a big deal however.
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12-18-2017, 06:56 PM
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#4
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Guru
City: North Carolina for now
Join Date: Aug 2011
Posts: 6,348
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Why not just do what the manufacturer tells you to do for that particular engine? Who cares what other people do on other models of engines?
__________________
George
"There's the Right Way, the Wrong Way, and what some guy says he's gotten away with"
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12-18-2017, 07:02 PM
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#5
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Guru
City: Quebec
Vessel Name: Bleuvet
Vessel Model: Custom Built
Join Date: Jan 2016
Posts: 4,374
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Don't think it is a big deal, I am doing it on mine as it is a huge truck filter housing with a cartridge (contains around 1 liter just in the housing) and it makes the level adjustment easier.
L
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12-18-2017, 07:18 PM
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#6
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Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 21,131
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I don’t fill them. It would be almost impossible to fill the starboard engine filter on mine due to very tight access. What engines do you have?
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12-18-2017, 07:27 PM
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#7
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Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 12,818
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The boatyard mechanic showed me that back in the 90s. But then his hobby was full restoration of classic cars. They're obsessed with stuff like this as replacement engines are hard to come by. I've been doing it ever since, and have no idea if it makes a difference.
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
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12-18-2017, 07:35 PM
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#8
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Guru
City: Kenai, Alaska
Vessel Name: Melanie Rose
Vessel Model: 1999 Willard PH
Join Date: Feb 2013
Posts: 1,236
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I have a horizontal filter, no way you could fill it and then spin it on. That's why halfway, it still doesn't spill out half full. If I had a vertical filter I would fill it, that's what I do with my F-250.
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12-18-2017, 09:14 PM
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#9
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Guru
City: Inside Passage Summer/Columbia River Winter
Vessel Name: Alaskan Sea-Duction
Vessel Model: 1988 M/Y Camargue YachtFisher
Join Date: Jul 2012
Posts: 8,046
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Hey FB. What engines do you have?
On my CAT 3208T/As I have two huge filters per engine. Not hard to get to and change. I fill my filters with clean oil before installing them. Reason? Not sure, just makes since as the oil pump would have to work harder to fill everything up and I hate the alarm. So if you can do it without making a mess go for it.
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12-19-2017, 06:35 AM
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#10
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Technical Guru
City: Wilmington, NC
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 6,194
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On vertical filters with decent access, good to fill them. But not a big deal, especially if engine was last run an hour or two ago for the drain and fill. Bearings are well oiled from that last run.
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12-19-2017, 06:44 AM
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#11
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Senior Member
City: Toronto
Join Date: Nov 2015
Posts: 271
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Quote:
Originally Posted by Comodave
I don’t fill them. It would be almost impossible to fill the starboard engine filter on mine due to very tight access. What engines do you have?
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Exactly my case .... 2 @ 6BT5.9M
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12-19-2017, 07:18 AM
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#12
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Senior Member
City: Alexander
Join Date: Aug 2017
Posts: 152
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I always do on vertical filters. Some of my construction equipment have pre filter primers.
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12-19-2017, 07:22 AM
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#13
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Senior Member
City: North NJ
Vessel Name: Bassey
Vessel Model: 17' Bass
Join Date: Aug 2016
Posts: 438
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Yes prefill on filters I can fill up without spilling plus just a little on the o ring always. Do that with any motor I service on road or off.
Better piece of mind for me. The oil pressure comes up a little quicker on that first start up instead of letting the oil pump fill it.
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12-19-2017, 07:54 AM
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#14
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Guru
City: LI or Fla
Join Date: Jul 2013
Posts: 1,148
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Getting oil pressure up quicker is always a good thing, but not always possible based on filter installation.
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12-19-2017, 09:50 AM
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#15
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Senior Member
City: Washington
Join Date: Nov 2017
Posts: 468
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I have never seen a recommendation to prefill oil filters and I've been around a while. It seems like a good idea (well, it can't hurt) but my filters are horizontal so it's not possible.
Prefilling my fuel filters is possible and I do this so I don't have to bleed the fuel system.
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12-19-2017, 10:06 AM
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#16
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Guru
City: gulf coast
Join Date: Jun 2014
Posts: 3,440
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I shut off the fuel solenoid and crank until pressure comes up.
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12-19-2017, 02:11 PM
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#17
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Guru
City: Holladay, UT
Vessel Name: Dream Catcher
Vessel Model: Nordic Tug 37-065
Join Date: Oct 2007
Posts: 841
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Quote:
Originally Posted by AKDoug
If you are like most and run your engine to warm the oil before draining it, I am pretty confident the residual oil will lubricate quite adequately as the filter fills and begins to circulate the new oil.... JMO
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That's what I've done - the engine is always recently run and is still warm. Never filled new oil filters before installing in 6,500 hours on my Volvo, and it's doing fine. When engine is started after the oil change, oil pressure comes up really quickly. Same on my Cummins truck engine over 180K miles. I do fill fuel filters, however.
__________________
Richard Cook
Dream Catcher (Nordic Tug 37-065) Poulsbo WA
Previously: New Moon (Bounty 257), Cindy Sea (C-Dory 22 Cruiser)
"Cruising in a Big Way"
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12-19-2017, 03:38 PM
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#18
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Guru
City: Between Oregon and Alaska
Vessel Name: Charlie Harper
Vessel Model: Wheeler Shipyard 83'
Join Date: Jun 2016
Posts: 3,021
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Most engine wear takes place at cold startup or excessive cranking before starting. Dirty oil is the 2nd most common cause of wear.
Filling the filter probably helps, but also storing the new oil where it will be warm before changing also helps.
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12-19-2017, 03:48 PM
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#19
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Guru
City: Sydney
Join Date: Jul 2015
Posts: 1,646
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It is possible to get a air lock in some filters and this can take ages of priming before reaching operating pressure .If the manufacture thinks its should be pre filled just do it
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12-19-2017, 04:37 PM
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#20
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Guru
City: Concrete Washington State
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 18,738
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Quote:
Originally Posted by Lepke
Most engine wear takes place at cold startup or excessive cranking before starting. Dirty oil is the 2nd most common cause of wear.
Filling the filter probably helps, but also storing the new oil where it will be warm before changing also helps.
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Lepke I’ve heard that over and over and over. But I don’t belive it.
If it was true all kinds of engine manuals would say to minimize how often you start your engine. Pre-lube systems would be standard equipment and great efforts would be made to minimize the no oil pressure time. Oil filter orientation seems to be of no concern to engine manufactuers. Little engines w splash oiling systems would self-destruct in very short periods of time. It dosn’t seem to matter at all if there’s several seconds w/o oil pressure.
HaHa but I do put oil in the filter can before screwing it on.
__________________
Eric
North Western Washington State USA
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