anti-drain back valve?
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Senior Member
Joined: Oct 2000
Posts: 494
Likes: 0
From: Louisville, KY, USA
anti-drain back valve?
I know oil filters have been discussed to death here, but I have another question. What purpose does the anti-drain back valve serve on a filter that is mounted vertically? I can see it's purpose if the filter is mounted horizontally on the engine. Just wondered. Any ideas thoughts?
JBRIII
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97 SC XLT 4.6L
K&N Gen II FIPK
75MM BBK TB
Gibson Super Truck Exhaust
Hypertech Chip
Steel Horse Upper and Lower Billet Grille's
JBRIII
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97 SC XLT 4.6L
K&N Gen II FIPK
75MM BBK TB
Gibson Super Truck Exhaust
Hypertech Chip
Steel Horse Upper and Lower Billet Grille's
Senior Member
Joined: Jun 2000
Posts: 237
Likes: 0
From: Buena Vista CO USA
Ford Filter OK, but 20-40 may void your warranty if you have a problem. Ford says 5-30.
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2000 F-150, XLT, SPORT 4X4, BRIGHT RED/DARK GRAPHITE, SUPER CAB,
SHORT BED, 5.4L, AUTO, 3:55LS, TOW PACKAGE, HD COOLING/ELECT, SKID PLATES
SPORT CLOTH SIX WAY POWER CAPTAIN'S CHAIRS, CONSOLE, SINGLE CD,
CRUISE,ESOF,REMOTE KEYLESS, FORD SNAPLESS TONNEAU COVER, FORD BEDLINER,
FORD MOLDED SPLASH GUARDS, FORD BODY COLOR CABSTEPS,
MODS: CATCH ALL FRONT MATS, LUND DEFLECTOR, FORD VENT SHADES,
GIBSON SWEPTSIDE CATBACK,
K&N GENII FIPK,
FORD HITCH COVER
NEXT: SUPERCHIP!!
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2000 F-150, XLT, SPORT 4X4, BRIGHT RED/DARK GRAPHITE, SUPER CAB,
SHORT BED, 5.4L, AUTO, 3:55LS, TOW PACKAGE, HD COOLING/ELECT, SKID PLATES
SPORT CLOTH SIX WAY POWER CAPTAIN'S CHAIRS, CONSOLE, SINGLE CD,
CRUISE,ESOF,REMOTE KEYLESS, FORD SNAPLESS TONNEAU COVER, FORD BEDLINER,
FORD MOLDED SPLASH GUARDS, FORD BODY COLOR CABSTEPS,
MODS: CATCH ALL FRONT MATS, LUND DEFLECTOR, FORD VENT SHADES,
GIBSON SWEPTSIDE CATBACK,
K&N GENII FIPK,
FORD HITCH COVER
NEXT: SUPERCHIP!!
Senior Member
Joined: Aug 2000
Posts: 210
Likes: 2
From: Warwick, RI
My mistake, I meant I will use the oil that FORD spec's which is 5W-20 
Say's so on the oil fill cap and the owners manual.
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2001 F150 SC SPORT 4X4 FLARESIDE
* Black
* 4.6
* awesome factory 10 spoke 17" wheels
* "MAN"ual shift 4x4
* 3.55 Limited slip
* Captains chairs W/console
* Factory tube steps
* Slider
Say's so on the oil fill cap and the owners manual.
------------------
2001 F150 SC SPORT 4X4 FLARESIDE
* Black
* 4.6
* awesome factory 10 spoke 17" wheels
* "MAN"ual shift 4x4
* 3.55 Limited slip
* Captains chairs W/console
* Factory tube steps
* Slider
Senior Member
Joined: Aug 2000
Posts: 210
Likes: 2
From: Warwick, RI
You hit the nail on the head JBRIII.
The valve was developed for top mount filters and has little benefit to bottom mount or horizontal mount applications. Supposedly it keeps the filter full (it doesn't unless mounted upside down) to get oil where it is needed faster. Problem is, unless your engine has been sitting for six months, there is plenty of oil on the parts in question on start up. Just more marketing "spin" to sell high priced filters.
Being a new member, you will find that topics like filters and oil and spark plugs and many other topics are discussed to a point it could make you puke. i.e. filters that can trap a paricle one billionth of a micron vs. one that can only filter a half billionth micron. It just doesn't matter. You can put 250,000 miles on an engine using a $3 Fram filter or a $100 super duper filter. your money.
I will admit I will be using the FORD filter and 20-40W oil during the waranty period.
------------------
2001 F150 SC SPORT 4X4 FLARESIDE
* Black
* 4.6
* awesome factory 10 spoke 17" wheels
* "MAN"ual shift 4x4
* 3.55 Limited slip
* Captains chairs W/console
* Factory tube steps
* Slider
The valve was developed for top mount filters and has little benefit to bottom mount or horizontal mount applications. Supposedly it keeps the filter full (it doesn't unless mounted upside down) to get oil where it is needed faster. Problem is, unless your engine has been sitting for six months, there is plenty of oil on the parts in question on start up. Just more marketing "spin" to sell high priced filters.
Being a new member, you will find that topics like filters and oil and spark plugs and many other topics are discussed to a point it could make you puke. i.e. filters that can trap a paricle one billionth of a micron vs. one that can only filter a half billionth micron. It just doesn't matter. You can put 250,000 miles on an engine using a $3 Fram filter or a $100 super duper filter. your money.
I will admit I will be using the FORD filter and 20-40W oil during the waranty period.
------------------
2001 F150 SC SPORT 4X4 FLARESIDE
* Black
* 4.6
* awesome factory 10 spoke 17" wheels
* "MAN"ual shift 4x4
* 3.55 Limited slip
* Captains chairs W/console
* Factory tube steps
* Slider