I think I am in deep trouble

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quote:

Originally posted by Pablo:
Siphoned in the correct direction - the ADBV would be of no help.

I believe this is exactly what happened - the oil did not leave the filter via the inlet holes but rather the center outlet hole because it was syphoned out over the 5 hour drain period.

If you still have your old filter you could put it back on, start the engine then turn it off, pull the filter and you would experience the same oily mess you normally do. Repeat as many times as you want and wait as long as you like. Oil will still be in the filter. Just don't pull the drain plug to start another syphoning effect.
 
quote:

Originally posted by Clyde65:
Well until I figure out how the oil is routed through the engine, I guess I'm glad the PF47's don't have a ADBV.
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They DO have an ADBV, just not a bypass valve (which is intergral with the oil filter mount).

If I let my vehicle sit a while, or change the filter after it's sat overnight, sometimes it's dry. Old nitrile antidrainback valve for yea!

No worries Niel
cheers.gif
 
BTW, if you have left your engine oil to drain for a day or so, it may take a little longer than normal to build oil pressure and turn off the light when you start it back up... I experienced this years ago on one particular vehicle and learned to just drain the oil a normal amount of time rather than to extend it to get all the oil out. I actually started the engine one time with the new oil and filter and sat there and watched the oil light stay on way too long as the engine idled louder than normal due to no oil pressure. Worried and sort of frantic, I shut it down and didn't know what to do (no BITOG), but then realized that by draining it out overnight, that the oil pump had probably lost its prime, so then I restarted it and then revved up the engine momentarily (decided to go for it) and then the light went right off and things started to quiet down and I was not as worried any more as I knew that my oil pump had finally re-primed and my engine was still ok.

BTW on a 2000 Taurus that my friend had, the oil filter would always drain out overnight or even after a few hours with Purolator or several other brands including Amsoil SDF34. But when we went back to Motorcraft FL400S filter (at the recommendation of several BITOGERs), the filter was always full whenever removed, no doubt due to the better ADBV on that filter. I believe this same Motorcraft filter may fit your Lexus as well and can be had for reasonable price at several locations. My BIL is using this filter on both his Toyota minivan and Camry, both with the 3L V6 and oil filter located under the exhaust manifold.
 
quote:

Originally posted by 427Z06:
I don't.....

Does seem to defy logic, doesn't it? It happened to one of our moderators over at PassatWorld. He left his drain plug out for 3 hours before removing the oil filter and discovered that the filter was only half full. Normally removing the filter results in a big mess because of the angle of the filter.
 
Doesn't have to be lower than the level of the pan, just lower than the level of the oil in the filter. I guess your logic might apply if you are thinking of the oil in the pick-up tube as a contiguous flow all the way through the filter....however when the engine shuts down this isn't the case, even with the best ADBV.

It happened twice on my 260K mile beater. Remote higher than pan.

Never happened on the 850. (filter as low as the oil pan)
 
quote:

Originally posted by TurboJim:

quote:

Originally posted by 427Z06:
I don't.....

Does seem to defy logic, doesn't it? It happened to one of our moderators over at PassatWorld. He left his drain plug out for 3 hours before removing the oil filter and discovered that the filter was only half full. Normally removing the filter results in a big mess because of the angle of the filter.


The oil simply drained back through the ADBV. No need to defy the laws of Physics.
 
quote:

Originally posted by Pablo:
Doesn't have to be lower than the level of the pan, just lower than the level of the oil in the filter. I guess your logic might apply if you are thinking of the oil in the pick-up tube as a contiguous flow all the way through the filter....however when the engine shuts down this isn't the case, even with the best ADBV.

It happened twice on my 260K mile beater. Remote higher than pan.

Never happened on the 850. (filter as low as the oil pan)


If the oil filter is higher than the lowest point in the lubricating circuit, then yes, it may be siphoned out, if, there is already an air pocket somewhere between the sump pickup and the oil filter, or your oil has one heck of a vapor pressure. However, there are numerous open points in the oil circuit between the lowest point and the oil filter where air can get sucked in, again making it highly unlikely it'll drain the filter dry.

MacGyvered amateur installations are another story.
 
All I will say is that it can and does happen - the rareness of the occurence is some testimony to the oddness of aligned events. The ADBV is not air tight, but given a certain (low) level in the pan or many hours after draining oil, etc then an air pocket can exist.
 
quote:

Originally posted by Pablo:
All I will say is that it can and does happen - the rareness of the occurence is some testimony to the oddness of aligned events. The ADBV is not air tight, but given a certain (low) level in the pan or many hours after draining oil, etc then an air pocket can exist.

You're obviously mistaking siphoning with fluid which is simply flowing downhill.
 
quote:

Originally posted by 427Z06:
...

A simple and effective remedy is simply to change the oil filter.


Exactly.

If you had extensive sludge in that engine, your Mobil1 would be blacker than roofing tar within about 500 miles.
 
quote:

You're obviously mistaking siphoning with fluid which is simply flowing downhill.

No, you are obviously failing to understand what I am trying to explain. In the cases I have observed the filters were opening side up. The fluid did not simply flow downhill
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quote:

Originally posted by Pablo:

quote:

You're obviously mistaking siphoning with fluid which is simply flowing downhill.

No, you are obviously failing to understand what I am trying to explain. In the cases I have observed the filters were opening side up. The fluid did not simply flow downhill


Well...not knowing how you plumbed your remote filter, you may be right. Sucked the filter dry, did it?
 
Wasn't "dry".

But to your chagrin this is not the only upright filter set-up I've seen happen on. An 1988 Chevy S-10 (4.3L) comes to mind. And as we've seen here it happens on other cars from time to time.
 
Change your oil, install new filter.
Run engine till it is warmed up, turn off.
Crawl under car and put hand on end of oil filter, is it hot or cold?
 
Aren't those S10 remotes up high (are we talking one of the OEM remote setups)?? About headlight level?
 
It's been awhile - but as I recall the filters where pretty empty (1/4-1/3?) but not dry. They had been passing oil if that's what you are getting at.

Indeed the 88 S-10 came with factory remote (lot's of 'em leaked) but obviously a prime candidate to siphon - at almost hood level.
 
quote:

Originally posted by Pablo:
It's been awhile - but as I recall the filters where pretty empty (1/4-1/3?)

Interesting that it would suck that much oil through the filter paper, but no air.

In any event, I've yet to see the parallel between a horizontally block mounted filter that was found dry on a '01 Lexus RX300 3.0 V-6 and a hood level remote mount in a S-10 partially empty.
 
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