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01-22-2013, 12:35 AM | #1 |
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9 psi difference in oil filters!
Just thought I would put this out there for you to know. Im running rotella 15w-40 oil. With the fram tough guard tg5 filter upon cold start with the engine sitting cold since yesterday afternoon, my guage read 21 pounds at idle. Went to the store, grabbed an acdelco filter, filled it with the rotella oil. Took off the tg5 and screwed on the ac delco. Started the engine and the oil pressure read 30 psi at idle. Ive heard of fram causing lower oil pressure but I was shocked to see this! Hope this helps some of you out there!
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01-22-2013, 01:12 AM | #2 |
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Re: 9 psi difference in oil filters!
great to hear, i was following your other thread. how's it doing on the freeway now?
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01-22-2013, 01:55 AM | #3 |
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Re: 9 psi difference in oil filters!
i just changed the filter but havnt had a chance to drive it yet, just start it. it has been running and driving great though
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01-22-2013, 02:10 AM | #4 |
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Re: 9 psi difference in oil filters!
Guy at our local autozone told me that the local autozones aren't carrying the AC DELCO oil filters for the SB Chevy anymore because of the check valve inside.he said that there were a few that didn't open causing engine failure.
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01-22-2013, 02:52 AM | #5 |
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Re: 9 psi difference in oil filters!
Thats interesting as I just bought the filter from autozone. So does everyone agree that ac delco filters are no good and should be avoided as well?
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01-22-2013, 04:26 AM | #6 |
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Re: 9 psi difference in oil filters!
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01-22-2013, 06:51 AM | #7 |
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Re: 9 psi difference in oil filters!
I've run one ever since I owned the truck without any problems. I bought the truck in 1986.
I just swapped over to O-Reilly's 5w-30 synthetic and AC filter last week after fixing some oil leaks. It's a little over a dollar less per qurt than the major brands and I figured it's better than just regular oil.
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01-22-2013, 08:31 AM | #8 |
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Re: 9 psi difference in oil filters!
I never had a problem with an AC filter and I've been using them since 1981!
The only thing I didn't like is when they phased out the PF-25 and told everyone to use PF-454 in it's place. It's like 1.5 inches shorter so less filtering I guess. ?? I use PF-1218 myself. It's about the same size as the PF-25 was.
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01-22-2013, 08:34 AM | #9 |
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Re: 9 psi difference in oil filters!
That's the one I use also. I have been using the AC all my life since I started driving back in 1976. dad was a true AC filter man.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
01-22-2013, 12:32 PM | #10 | |
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Re: 9 psi difference in oil filters!
Quote:
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01-22-2013, 08:36 AM | #11 |
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Re: 9 psi difference in oil filters!
An objective opinion:
I spent several years in the fleet maintenance business and have done considerable research into all types of filters, (oil, air, hyd. etc.) . IMHO, the absolute best oil filters on the market are made by Baldwin (Kearney, Ne.). Not a common parts store brand, but Baldwin is the OEM filter on all new Ferrari's. Check out the engine compartment on Ferrari and you will see the bright red Baldwin filter. http://www.baldwinfilter.com/ . The next best rated filter, by several independent surveys, is the NAPA Gold (made by WIX). I have done many oil samples and I have to agree. The NAPA Gold has more actual filter area than any other. The cleanliness of take-off oil is about as good as can be expected. After cutting open hundreds of oil filters, I wouldn't put a Fram on anything. IMHO, they are cheap crap. |
01-22-2013, 08:53 AM | #12 | |
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Re: 9 psi difference in oil filters!
Quote:
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01-22-2013, 12:12 PM | #13 | |
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Re: 9 psi difference in oil filters!
Quote:
"The two filters that we recommend are the Fram Part # HP4 and the WIX Part # 51061R. They are both great filters and are designed for High Volume Oil Pumps with the large bearing clearances of a high performance engine. If you put a non-high volume oil filter on a engine with a High Volume oil pump it can drop oil pressure by over 20 lbs all by itself and kill an engine with low oil pressure. WIX runs all of the oil through the filter every time without a bypass valve at larger micron restriction while FRAM uses low micron with bypass valves to allow unfiltered oil to bypass the filter to achieve the same flow of oil. The WIX 51061R is preferred by most off-road or dirt track racers because it does not have a bypass valve and filters all the oil every time but it is just a matter of prefference for most racers. Either of those filters will perform excellent on 500 - 1500 HP."
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01-22-2013, 09:15 AM | #14 |
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Re: 9 psi difference in oil filters!
Any time the subject of filters come up, people have heard this about that one and that about this one. Personally I have heard Baldwin filters were no good. Not saying they are, that's just what I heard. I don't know because I've never used one. The main thing with filters is to change them regularly. Millions of people have used Fram, Wix, Microguard, Bosch, AC, Motorcraft, Baldwin, Deutch, (enter other filter names here) without a problem for years. You will always have people LOVE their brand of filter and HATE all others. Find what works for you and does best on your particular engine.
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01-22-2013, 09:37 AM | #15 | |
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Re: 9 psi difference in oil filters!
Quote:
. I don't base my opinions on hearsay, I have done many hours of research. I'd suggest anyone do the same. . They are good enough that Enzo Ferrari used them exclusively in all his personal racing engines. Mr. Baldwin made a commitment years ago to always make a filter for all Ferraris. Now, I'm no expert and as stated "This is a personal opinion", but if Baldwin was good enough for Ferrari, they're good enough for me. Yea. I know, opinions are like ........, every body has one Last edited by TobyArnot; 01-22-2013 at 09:45 AM. |
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01-22-2013, 10:40 AM | #16 |
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Re: 9 psi difference in oil filters!
I run Napa Gold filters on everything I own including my mowers and tractor. Nothing less.
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01-22-2013, 11:52 AM | #17 | |
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Re: 9 psi difference in oil filters!
Quote:
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01-22-2013, 01:03 PM | #18 |
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Re: 9 psi difference in oil filters!
My dad and I have run many Fram filters in the past, with great results, back when you always changed your conventional oil at 3,000 miles. I got away from them once I went out on my own, due to the many internet stories of how cheap they are. I try to buy Wix when available, or Motorcraft (for my Fords). We've run AC Delco filters on lots of GM sutff as well, with excellent results.
I don't know if they really are any better on daily drivers, but the Wix/Motorcrafts make me feel better and worry less, so that's my stance. I haven't really ever thought about the PSI difference between filters honestly. The Burb is the first vehicle I've had that has an actual pressure gauge hooked up to the engine. Every other gauge has been factory sending unit, which we all know can be hit-or-miss, even to the point of just being an idiot-light.
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01-24-2013, 04:48 PM | #19 |
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Re: 9 psi difference in oil filters!
Frams are constantly recalled for using the wrong paper in the filter. They like to mix up the air filter element for the filter media. I have taken several apart where the paper had collapsed and the filter wasn't doing a thing.
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01-24-2013, 10:04 PM | #20 |
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Re: 9 psi difference in oil filters!
While your observation is interesting it really needs to be tested to verify the actual change. It sounds like one filter reading was taken from a coldsoak and overnight drain back while the other was on a warmer engine that had not sat overnight.
If you really want to know, go buy two new filters of the brand and model you want. Start and run the engine or drive until fully warm. Note the current idle oil pressure. Now without delay replace the filter with a prefilled test filter #1. Start and run the engine again back to operating temp., note the pressure indication. Imediately remove the #1 test filter and do the same with test filter #2. Remove the #2 test filter and reinstall the #1 test filter again prefilled and note the indications, they must be the same as the first test run for a valid test. Anything less than this is an observation and not a test.
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01-26-2013, 07:10 PM | #21 |
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Re: 9 psi difference in oil filters!
If you're going to run an AC filter and want a better setup, look for the Classic series. PF454CL or PF1218CL. The Classic filters are very similar to the original PF25 and PF35 filters. The non classics are not built as well IMO, plastic core inside and all.
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