What are your thoughts on the necessity of an oil filter with anti-drainback valve when used on an engine where the filter is mounted threaded side up? I'm looking at WIX 51060 vs. 51061 for a late-1980s 350. Is there some type of siphoning action that could draw the oil up and out of the filter after the engine is shut down? I read that theory on another forum, and my BS detector lit up!
Anti-drainback valve?
- Thread starter mbres2000
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A few of the previous threads on this topic that touch on your specific question:
Does the anti drain back valve matter?
I own a 2008 Honda Accord V6. I have gained much knowledge from this forum. My question is this. My filter installs completely vertical and upside down (threads up). Would this filter location even require an anti drain back valve? Wouldn't it flow better without one?
bobistheoilguy.com
anti drainback valve question
what does it do? - keep oil in the engine? or - keep the filter full what is the oil flow path? oil pump - filter - engine parts - then drain to pan?
bobistheoilguy.com
Is an anti-drainback valve needed in a filter that's mounded vertically?
All, I have a Chevy Suburban with the 5.3L engine. I'm wondering that since the filter is mounted vertically (with the open end mount up), do I really need a filter with an anti-drainback valve? Thanks, Wayne
bobistheoilguy.com
Anti-drainback valve on vertical mount filter
Is it really needed? I've changed the oil on a few cars that had a vertically mounted filter, including my 2004 WRX and my dad's old '96 Buick Regal Custom. Pretty much every filter I've used has what I guess would be considered an ADV. However, some are different than others. I'd use AC PF47s...
bobistheoilguy.com
Anti Drain Back Valve or Not?
1962 327 300 hp had original shell and filter cartridge. Approx 1998 Fram had the K-98A oil filter adaptor kit so a PH 13 spin-on could be used. I've depleted my supply of PH-13 and want to use the WIX. The PH-13 does NOT have the anti-drain back valve. So, I should use the WIX 51061 which also...
bobistheoilguy.com
Anti drain back valve
Maybe a dumb question, but if your oil filter mounts underneath the engine, but vertically with the open end up, does the type of anti-drainback valve it has matter that much? Or in this case does it matter if it has the anti-drainback valve at all?
bobistheoilguy.com
When would you not want an ADBV?
I was looking at some filters and stumbled across a Wix filter made specifically for Mazda Skyactiv engines and it doesn't have an ADBV. Wondering what the pro's and con's are here and what's the harm if you do have an ADBV.
bobistheoilguy.com
How does anti-drainback work in this application?
This is more of a theoretical question about oil filters. If the filter is inverted in how it's mounted - as in the opening faces downward... Would any oil held in place by the anti-drainback valve be held in place? Or could the oil eventually soak thru the filter element itself and...
bobistheoilguy.com
anti drain back valve
Unless a filter is mounded upsidedown is an adbv really necessary? I don't think they really do a good job holding back oil until the next start and in many installations the filter is poing down and then it just looks like it's something to get in the way. If a filter flows enough it might get...
bobistheoilguy.com
Anti drainback valves
I notice some filters have anti drainback valves. I was changing my oil not long ago (was using Donaldson ELF7349) and noticed it was not full to the top when I spun it off. The level was not low, but not right at the top either... I have noticed this in the past as well, but uoa has not shown...
bobistheoilguy.com
Anti Drain Back question.
Should vertical mounted filters have anti drain back valves? Does this valve keep the oil passage above the filter filled after shut down? Anyone know of a diagram or cut away drawing that will help me understand how this works. Engines in question were Chevy 350 cid and Ford 7.3 PSD. Thanks...
bobistheoilguy.com
ADB valve and upside down filters
I know this was posted before but I cant find it. Does the ADB valve even matter when the filter is mounted in a hanging position, i.e. the holes point upward?
bobistheoilguy.com
I learned something today...
After draining my oil filter I took it inside and took a small pick and poked holes in the anti-drainback valve. After setting the filter back down I got some more oil out of the filter.
bobistheoilguy.com
Thanks. Opinions are like...well, let's just say everybody has one!
I just put this one in my cart:
It sure does! The mess of oil that pours out when I do a oil filter change on my hemi is a pain,when I can swap filters in the middle of a oil change cycle on my inverted filter Audi and barely a drop.
Do your own testing if you have to prove it to yourself.
51061 drains into the pan without having to do anything else. 51061 does not have XP model as far as I know. 51061 also comes as racing filter but not recommended for street use. I’ve used them anyway. 51060 also available as XP but a hassle to drain after removal. No need for ADV on SBC in typical mounting. I think.
Which one is actually specified for that engine?
This. My wifes Mazda OEM filter does not have an anti-drainback valve. So, just stick with what the OEM of the engine requires.
Looks like the LS9/LT9 350 (carb, used through '86) calls for the Wix 51061 or 51060XP. The L05 350 (TBI, used for '87 - '95) calls for the the 51061 and 51060XP for 2WD applications and the 51036 and 51036XP for 4WD applications. Oddly though is that starting for the '91 model year, Wix replaces the 51061 with the 51060.
This is all based on the C/K pickup model lookups from Wix's site.
He said "late-80's 350" so not sure which engine we are dealing with here.
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Looks like the 51061 is the only one without an ADBV (looking at the photos in your links). If they spec an alternative as you show with and ADBV, that's the one I'd use. As mentioned above, even if the filter is mounted base up low on the engine like this engine, the ADBV still holds oil in the galleries above the filter.
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I have two 1985 l98 350's, and have used the Wix 51069 (no drainback valve or bypass). On the Corvette Forums, it has been stated that these engines have an ADV built into the block.
FWIW, I've never had any issues with either engine taking time to build oil pressure (it's pretty much immediate) nor do I hear any "knocking until oil pressure builds" types of noises on startup. So, I'm thinking having no ADV in the filter is acceptable.
I still have some Wix and will use them without worry, but the (very inexpensive) Ecogard filter for this engine (that I also have) does have an ADV.
When the Wix I have are gone, I'll be switching to the Ecogard for cost and quality, not the ADV, but am happy to have the ADV in the filter as a "belt and suspenders" type of deal.
FWIW, I've never had any issues with either engine taking time to build oil pressure (it's pretty much immediate) nor do I hear any "knocking until oil pressure builds" types of noises on startup. So, I'm thinking having no ADV in the filter is acceptable.
I still have some Wix and will use them without worry, but the (very inexpensive) Ecogard filter for this engine (that I also have) does have an ADV.
When the Wix I have are gone, I'll be switching to the Ecogard for cost and quality, not the ADV, but am happy to have the ADV in the filter as a "belt and suspenders" type of deal.
Think the guys on the Vette forums may be misinformed. Those engines have a filter bypass valve in the block, but no ADBV.
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Yep-- you're right. I got "ADV" and "bypass" mixed up.