9 psi difference in oil filters!

[SnS C10]

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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[So.Cal.Super]

great to hear, i was following your other thread. how's it doing on the freeway now?

[SnS C10]

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

[PAWS 72]

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.

[SnS C10]

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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[PAWS 72]

Originally Posted by Shaun23a11en

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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I think their wanting to faze them out. I haven't had any issues myself

[Andy4639]

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.

[bobs409]

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.

[Andy4639]

Originally Posted by bobs409

I use PF-1218 myself. It's about the same size as the PF-25 was.

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.

[TobyArnot]

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.

[MARKDTN]

Originally Posted by TobyArnot

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.

Yep, do search on oil filter comparison and you will be shocked at what is inside some common filters. I usually use WIX which is available at NAPA, CarQuest, and O'Rieleys. I do have a few more PF25s left that I got when Kmart clearanced the last of their AC filters around 2000. I have used the 2 qt filter (WIX 51794) on my '83 K20, but not anymore. That gave me 6 qts total, now with the Corvette TPI I have a larger pan already.

[sjarrett71]

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.

[TobyArnot]

Originally Posted by sjarrett71

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 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

[rs74]

I run Napa Gold filters on everything I own including my mowers and tractor. Nothing less.

[leddzepp]

Originally Posted by sjarrett71

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.

Yup...same thing with carburetors.

[derotoreut]

Originally Posted by TobyArnot

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.

I have to agree. I have a 383 stroker in my '69 C20 and my engine builder recommended the WIX racing filter. The NAPA Gold is made by WIX. At first I was somewhat concerned because I noticed that it filtered particles to a maximum size of 61 microns, which I thought was somewhat large. I know that there are other filters out there that would filter it down to a smaller micron size, but you have to be concerned about oil volume and pressure as well. Again, I have a racing engine, but here is what the engine builder said when I questioned it:

"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."

[PAWS 72]

Originally Posted by bobs409

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.

That was the number I was trying to say.

[PAWS 72]

Originally Posted by MARKDTN

Yep, do search on oil filter comparison and you will be shocked at what is inside some common filters. I usually use WIX which is available at NAPA, CarQuest, and O'Rieleys. I do have a few more PF25s left that I got when Kmart clearanced the last of their AC filters around 2000. I have used the 2 qt filter (WIX 51794) on my '83 K20, but not anymore. That gave me 6 qts total, now with the Corvette TPI I have a larger pan already.

I was wondering if there was a 2 quart filter any more for the older engines. I used to run the PF-35? on mine all the time then got where I couldnt find it.

From 1999 till around 2008 the truck didnt get drove much because I was on the road in a diesel so i think maybe 6000 miles in that time span.

I did notice an improvement on the pressure on the 71 though when I change the oil in it the other day.I didnt know when the PO had changed it but I thought that the motor was shot because it sat so long and not driven.

You learn something new every day.

[PAWS 72]

I've noticed a lot of the stores having their own brand of oil, would it be just as good for an older engine as name brand also? I know thats another can of worms.

[nate_g_2003]

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.

[So.Cal.Super]

Originally Posted by PAWS 72

I've noticed a lot of the stores having their own brand of oil, would it be just as good for an older engine as name brand also? I know thats another can of worms.

A bigger can of worms then I can fish in a lifetime!

With the older engines you want to stick with the higher zinc content, or you should be able to run the no name brand with an additive.

after a rebuild and roller cam, you have more options.

This is just my .02, I know there are plenty of people out there that run everything under the sun and have no problems. just not what i have learned.

post script....

I think Oil is like religion, we all want to get the same results, we just believe in our own way of getting there.

[BlackedOut67shorty]

Originally Posted by PAWS 72

I was wondering if there was a 2 quart filter any more for the older engines. I used to run the PF-35? on mine all the time then got where I couldnt find it.

From 1999 till around 2008 the truck didnt get drove much because I was on the road in a diesel so i think maybe 6000 miles in that time span.

I did notice an improvement on the pressure on the 71 though when I change the oil in it the other day.I didnt know when the PO had changed it but I thought that the motor was shot because it sat so long and not driven.

You learn something new every day.

Yeah but itcan be tricky to find sometimes. I looked for a filter for a c 50 and found the 2 quart....but i cant use it cause my header touches it...

[burnin oil]

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.

[TobyArnot]

Originally Posted by BlackedOut67shorty

Yeah but itcan be tricky to find sometimes. I looked for a filter for a c 50 and found the 2 quart....but i cant use it cause my header touches it...

Look at Baldwin B7. (2) qt.

[hjewell2]

Originally Posted by BlackedOut67shorty

Yeah but itcan be tricky to find sometimes. I looked for a filter for a c 50 and found the 2 quart....but i cant use it cause my header touches it...

PF-932 2 qt filter