Anti Drain Back Oil Filters Kill Engines

[Blown&Injected]

According to my machinist the rubber flap that is the anti drain back valve does more harm, in creating a restriction, than good. The recommended filter is the one I inquired about here:

http://www.turbobuick.com/forums/showthread.php?threadid=149581&referrerid=1527

 

[STP]

Hrm..Makes sense what he is saying but I have always run filters with anti drain back valves without problems. I personally don't run my cars enough, so a filter with an antidrainback valve appeals to me.

 

[GNVenom]

I don't believe it. The anti-drainback valve keeps the oil in the journals, particularly the main bearings. When you start the engine, the oil must be there first. If it drains back, you start the engine "dry", and the bearings won't get oiled until the whole oiling system fills up. My 86 with high miles would make a "scraping" noise when I would first start the engine in the morning, a result of worn main bearings. Keeping the oil in the system minimizes this effect, so I always used the PF 52 filter for that reason. I don't think the restriction as a result of the valve is really significant, since the oil pressure is not really affected.

-John Spina
www.casperselectronics.com

 

[TurboGN]

Originally posted by GNVenom
I don't believe it. The anti-drainback valve keeps the oil in the journals, particularly the main bearings. When you start the engine, the oil must be there first. If it drains back, you start the engine "dry", and the bearings won't get oiled until the whole oiling system fills up. ...I don't think the restriction as a result of the valve is really significant, since the oil pressure is not really affected.

I couldn't have said it better except I use the Baldwins because they have the most effective anti-drainback valve.

 

[fast eddie]

I couldn't have said it better except I use the Baldwins because they have the most effective anti-drainback valve. [/B][/QUOTE]



Same here

 

[STP]

Baldwin or Wix are all I use on mine.

 

[mybuick]

does the pf 47 have the drain back?

 

[GNVenom]

PF 42 does not have a drainback valve, only the PF 52.
-John Spina
www.casperselectronics.com

www.gnspyder.com

www.gnvenom.com

 

[Garycar]

The PF 47 and PF 52 both have the anti-drain feature. I too agree with John's assessment on the issue.

 

[Hognose]

Does the Fram PH3980 have the antidrinback valve?

 

[GNVAIR]

Originally posted by Hognose
Does the Fram PH3980 have the antidrinback valve?

None of the Fram oil filters are worth a darn if you cut them open and compare them to the Wix, Baldwin, Delco or Purolators.
The best comparison was from the mini mopar site of several years back. That guy said it best "The Frams filtering media has the consistency of soaked paper towels."

 

[Hognose]

Originally posted by GNVAIR
None of the Fram oil filters are worth a darn if you cut them open and compare them to the Wix, Baldwin, Delco or Purolators.
The best comparison was from the mini mopar site of several years back. That guy said it best "The Frams filtering media has the consistency of soaked paper towels."

Thanks, but that doesn't answear my question about the drainback valve.

 

[GNVYUS 1]

$1 Mobil One Filters here from all those closed down K Marts

I would think that the engineers at GM or any other manufacturer would of snubbed the anti drain back if that was the case.

 

[Blown&Injected]

Originally posted by DR.BOOSTER
I would think that the engineers at GM or any other manufacturer would of snubbed the anti drain back if that was the case.

Me too, especially since they put a bizillion of'em on the road every 10 seconds

 

[TurboJim]

Screw he drainback valve, install a pre/post luber and never have a dry start again <grin>

But seriously, most horizontal mount filters have an anti-drainback valve. I agree with John as well. I dont use Fram filters due to the Mopar site mentioned above a couple years back. They basically said Fram filters werent worth the garbag bag you throw them into. I too use Wix, or AC Delco. Neing an AC Delco TSS shop, ACD's are easier for me to get.

I do have a ESP pre-post luber in my car, which is plumbed into my PTE turbo saver. I think I have the best of both worlds. Gauranteed clean oil (The Wix 51046?? has no bypass) and 50psi pressure before I ever turn the key, plus it runs the oil pump at shutdown to prevent turbo bearing damage as well.

 

[Fuelie600]

Jim, how good is it ( Wix 51046 ) to have no bypass? Unfiltered oil is better than no oil. Brian