Request help with marine engine oil filter

[Formula4Fish]

I have a 1998 Mercruiser 260hp 5.7L EFI (350 cid Chev.) that uses a SS330 Remote Mount for the oil filter. The Mercruiser part number for the oil filter is 35-802885Q, thread spec 13/16" x 16 NPT, no anti-drainback valve.

As you can see, the filter is upside down. Is it possible the reason the original Mercury filter had no anti-drainback valve is so the the oil WOULD drain back into the crankcase so it wouldn't make such a mess when it's unsrewed?

I am trying to understand why the original Mercruiser filter specifies no anti-drainback valve, and to learn if I might encounter any problems if I use a filter having an anti-drainback valve.

Specifically, if I use a filter that does have an anti-drainback valve, is oil going to gush out of it when I take it off?

Are there any other considerations I need to be made aware of if I use a filter having the anti-drainback valve?

Thanks,

****

 

[94supraonchrome]

I have a 260hp 5.0 EFI, similar to your 5.7 and have used anti-drainback filters for a while now, no problems, a small amount of oil is spilled out but no gushing.

 

[oilboy123]

Could it be they specify no ADBV because they are trying to keep it simple? In other words no ADBV = less chance of a problem.

 

[Steve S]

it is a Chevrolet filter

 

[40ford]

Take a punch-ice pick-screw driver etc. And punch a hole in the center of the filter that is facing you. And 3-4 holes around outer part of the filter that is facing you.

Pump out the sump while waiting on the filter to drain back. Then remove filter. Little or no oil will come out of the filter.

40ford

 

[Formula4Fish]

94supraonchrome,

Thanks for the feedback.

Steve S,

I have no idea what your point is with "it is a Chevrolet filter"

40ford,

I have no idea what you're trying to accomplish with an ice pick. Why would I want to punch holes in the filter? Will using a filter with an ADBV create a situation in which I might have to punch holes? If so, it will be a lot easier to continue using a filter with no ADBV.

Maybe my question wasn't clear. The original filter has no ADBV.

The question is, will I see any problems if I use a filter that DOES have an ADBV, and what problem might I see?

 

[greenaccord02]

I think the holes would break the vacuum and let the oil drain back down. Normally this wouldn't be an issue, but the ADBV changes all that.

And, no, I don't think using a filter with an ADBV would be any problem, but at the same time I don't think you'd gain anything either.

 

[Steve S]

That is the same filter that would fit on the engine filter adapter if the filter was mounted on the block instead of the remote filter mount.

 

[Steve S]

Punching a hole in the top of the filter would let in air to allow the oil to drain back into the pan and oil passages so there will be less of a mess when changing the oil filter.

 

[Gary Allan]

Originally Posted By: 94supraonchrome
I have a 260hp 5.0 EFI, similar to your 5.7 and have used anti-drainback filters for a while now, no problems, a small amount of oil is spilled out but no gushing.


This is the result I would expect. I suspect that no ADBV (Steve, there are Chevy filters that spec an ADBV) is simply because the mounting point will assure that the filter drains forward if not backward. It should find it easier to drain into the main gallery than to make its way back through the pump, imo.

There's no reason not to use one with an ADBV, imo.

 

[Formula4Fish]

Thanks for the responses folks.

The Mercruiser filter has been discontinued, superceded by a new part number, and become very difficult to find. When I try to cross reference the number to other brands, some of them show having a ADBV (like Wix) and some of them do not (like Fram).

After reading up on various web sites about filter quality, I wanted to be a little choosier about which brands of filters to use. Until I started studying the issue, I didn't even know there WAS an ADBV valve.

****

 

[Gary Allan]

Quote:
I didn't even know there WAS an ADBV valve.


Typically a SBC doesn't need one. A vertical mount stops back feeding once air breaches the top of the filter. The filter should stay relatively full.

The original intent/design of an ADBV is not to keep the filter full. No OEM spec includes 100% sealing. Now you'll see the "S" suffix on some Ford filters ..but the non-MC filters that "meet or exceed OEM spec's" don't necessarily have silicon ADBV ..that's because the spec is to "hold for X number of minutes". It's primarily to prevent back flushing of the media ..a slowed drainback, if you will. The "S" is to (probably, my speculation) to limit customer complaints about start up rattle. You don't see any TSB or warranty disclaimer from Ford about using non-OEM filters with nitrile ADBV's ..at least in some prohibitive way. They may have one to explain the noise to complaining warranty seeking customers.

With your inverted and high location, there's no way to prevent the filter from (almost completely) emptying out upon shut down.

Nice boat. Life is grand

 

[94supraonchrome]

3 of the best oil filters for Mercruiser small blocks in no particular order, all 3 are available at your local Advance Auto parts...

Mobil1
Part Number: M1302

K&N
Part Number: HP3002

Purolator Pure One
Part Number: PL34631