Offshoreonly.com

Offshoreonly.com (https://www.offshoreonly.com/forums/)
-   General Q & A (https://www.offshoreonly.com/forums/general-q-20/)
-   -   Why Upside Down Oil Filter? (https://www.offshoreonly.com/forums/general-q/347459-why-upside-down-oil-filter.html)

Full Force 06-07-2017 07:51 AM


Originally Posted by ICDEDPPL (Post 4560146)
I`d rather have upside down, at least it drains out with a hole at the top .


Mine , not so much


Attachment 568116



.

When I had that style I would punch a hole in top, then when you start to turn it have a cut washer fluid bottle under to drain into made a lot less mess, that style sucked!!

ICDEDPPL 06-07-2017 08:09 AM

like ^^^

Baja Rooster 06-07-2017 09:59 AM


Originally Posted by ICDEDPPL (Post 4560146)
I`d rather have upside down, at least it drains out with a hole at the top .


Mine , not so much


Attachment 568116



.


I'd feel sorry for you but my jealousy gets in the way. ;)

Sydwayz 06-07-2017 10:29 AM

1) Always ensure you can spin the filter before you pop a hole in one. The last thing you want is a compromised filter that you have drained, that is stuck on the motor. Also, a filter that is full of oil is less likely to collapse when you really need to torque off a tight one.
2) You can drain an inverted one by poking a hole in the TDC, and IF you have an anti-drain back valve, you will need to pierce that too. Then let the oil drain back into the pan.
3) On a filter that is open end up, you can pop a hole in the /edge/end, and drain it out into a bottle that you can put a funnel on to decrease the mess.
4) You can also do the same on a side-mount filter. But you will have to put a finger over the hole as you spin it off.
5) You could also install pre-lubers and just push a button and walk away.

Dave M 06-07-2017 12:24 PM


Originally Posted by Sydwayz (Post 4560188)
3) On a filter that is open end up, you can pop a hole in the /edge/end, and drain it out into a bottle that you can put a funnel on to decrease the mess.
4) You can also do the same on a side-mount filter. But you will have to put a finger over the hole as you spin it off.

On those, I put a gallon sized zip lock bag over the filter, unscrew filter and let it drop into the bag.

Padraig 06-07-2017 02:23 PM


Originally Posted by Dave M (Post 4560208)
On those, I put a gallon sized zip lock bag over the filter, unscrew filter and let it drop into the bag.

I am cheap. I usually just double up two plastic grocery bags.

Padraig

Ryan00TJ 06-07-2017 05:46 PM


Originally Posted by Gimme Fuel (Post 4560047)
I always wondered the same thing until I heard of the trick on here. When doing a filter change, loosen the filter slightly but do not remove it. Let it sit a few minutes. By venting it with the loosening, all the oil in the filter drains back into the pan and you actually wont spill a drop when you remove the filter. Works like a charm.

Yep, works like a charm. No need to punch holes in the filter.

92nsx 06-08-2017 11:09 AM


Originally Posted by RickVicik (Post 4560029)
Why does Mercruiser mount oil filters with the open end pointing down?

Because It make changing them so easy a cave man can do it.
1: Open hatch,
2: Take screw driver, punch hole in top of oil filter. Wiggle it back and forth.
3: Get out of boat, gather supplies,
4: Re board boat with oil change stuff. (The time gathering stuff lets the oil filter drain down).

Im down to 1 single shop towel to change oil both engines.

BUP 06-08-2017 03:58 PM

You loosen the filter to break the suction, it will drain the oil out - do not stab a hole in the filter as when you tear a hole in any metal object -- where does any of that portion of metal go --- hmmm maybe drain right back down with your motor oil then possible caught in one of your hose lines or where ever. . So do not stab oil filters.

The upside filters are because of clearance issues and better access plus some thoughts that the oil coming out of the filter flows better being upside down. I am not sure on that one. but it has been tossed around persay about the flow

1989mach1 06-08-2017 08:17 PM


Originally Posted by bup (Post 4560499)
you loosen the filter to break the suction, it will drain the oil out - do not stab a hole in the filter as when you tear a hole in any metal object -- where does any of that portion of metal go --- hmmm maybe drain right back down with your motor oil then possible caught in one of your hose lines or where ever. . So do not stab oil filters.

The upside filters are because of clearance issues and better access plus some thoughts that the oil coming out of the filter flows better being upside down. I am not sure on that one. But it has been tossed around persay about the flow

like


All times are GMT -5. The time now is 01:23 PM.


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.