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09-11-2019, 09:29 AM
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#1
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Junior Member
Join Date: May 2011
Posts: 16
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GM 8.1 workhorse oil pressure
Oil pressure reads 0 then 129,45,85,0,129 etc.
Just changed oil and filter. Heard bad info on FRAM filters. Any input?
Also looking onto the sending unit or loose connection.
If the filter is the fault would the pressure jump all over the place or stay at zero?
Oil light has come on and then off once. Oil level is fine.
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09-11-2019, 09:36 AM
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#2
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe according to the Rinpoche, of the SF monks.
Posts: 7,397
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Jumping around equals a bad connection or sender.
Happy Glamping
__________________
Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand!
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09-11-2019, 11:40 AM
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#3
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Senior Member
Join Date: Mar 2017
Location: Alaska in Summer Snow Birds in Winter
Posts: 2,073
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Fram filters are complete junk. I don't think there is any filter out there that is worse than a Fram.
That said, the filter isn't your problem. Likely a loose connection somewhere or something wrong with your Actia instrumentation cluster.
__________________
Tom and Sherry W.
06 Winnebago Adventurer 38J Workhorse W24 Lots of motor and suspension mods in the works
02 Itasca Suncruiser 35U. Workhorse W22 w/Safe-T-Plus, Koni FSDs, UltraTrac, etc, etc.
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09-11-2019, 11:51 AM
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#4
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Senior Member
Join Date: Oct 2002
Location: Madison, MS
Posts: 10,527
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Quote:
Originally Posted by mlhrad
Oil pressure reads 0 then 129,45,85,0,129 etc.
Just changed oil and filter. Heard bad info on FRAM filters. Any input?
Also looking onto the sending unit or loose connection.
If the filter is the fault would the pressure jump all over the place or stay at zero?
Oil light has come on and then off once. Oil level is fine.
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Where are you seeing those readings? IF you installed a FRAM filter, I suggest you replace it with almost ANYTHING other than another Fram. The AC Delco PF454 is the OE recommendation for oil filter.
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09-11-2019, 11:51 AM
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#5
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Senior Member
Join Date: Feb 2015
Location: Grapevine, Tx
Posts: 5,635
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Quote:
Originally Posted by AKIQPilot
Fram filters are complete junk. I don't think there is any filter out there that is worse than a Fram.
That said, the filter isn't your problem. Likely a loose connection somewhere or something wrong with your Actia instrumentation cluster.
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Wrong. The Fram UltraGuard filter is a very good filter.
The cheap Frams are just as bad as the other cheap oil filters.
__________________
2004 Fleetwood Southwind 32VS W20 - SOLD!
ReadyBrute Elite towing a 2017 Ford Edge Sport
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09-11-2019, 11:54 AM
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#6
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Senior Member
Join Date: Oct 2002
Location: Madison, MS
Posts: 10,527
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FRAM's advertising slogan used to be "Pay me now, or pay me later". Most of us think it should have been "....AND pay me later"
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09-11-2019, 02:12 PM
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#7
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Senior Member
Join Date: Mar 2017
Location: Alaska in Summer Snow Birds in Winter
Posts: 2,073
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Quote:
Originally Posted by F4Gary
Wrong. The Fram UltraGuard filter is a very good filter.
The cheap Frams are just as bad as the other cheap oil filters.
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Are you talking about the Fram PH5 Extra Guard?
Does Fram offer the Ultra Syn oil filter in a large capacity filter for the Workhorse 8.1?
__________________
Tom and Sherry W.
06 Winnebago Adventurer 38J Workhorse W24 Lots of motor and suspension mods in the works
02 Itasca Suncruiser 35U. Workhorse W22 w/Safe-T-Plus, Koni FSDs, UltraTrac, etc, etc.
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09-12-2019, 10:39 AM
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#8
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Senior Member
Join Date: Feb 2015
Location: Grapevine, Tx
Posts: 5,635
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Quote:
Originally Posted by AKIQPilot
Are you talking about the Fram PH5 Extra Guard?
Does Fram offer the Ultra Syn oil filter in a large capacity filter for the Workhorse 8.1?
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Looks like it's the XG5.
__________________
2004 Fleetwood Southwind 32VS W20 - SOLD!
ReadyBrute Elite towing a 2017 Ford Edge Sport
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09-12-2019, 12:05 PM
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#9
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Senior Member
Join Date: Mar 2017
Location: Alaska in Summer Snow Birds in Winter
Posts: 2,073
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Quote:
Originally Posted by F4Gary
Looks like it's the XG5.
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I didn't see the 8.1 listed on the application guide but looking at the specs it does look like it will work on the 8.1 no problem.
I've had good luck with Wix and Napa Gold but after looking closer at that Ultra Syn it appears to be just as good.
__________________
Tom and Sherry W.
06 Winnebago Adventurer 38J Workhorse W24 Lots of motor and suspension mods in the works
02 Itasca Suncruiser 35U. Workhorse W22 w/Safe-T-Plus, Koni FSDs, UltraTrac, etc, etc.
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09-13-2019, 09:45 AM
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#10
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Senior Member
Join Date: Feb 2015
Location: Grapevine, Tx
Posts: 5,635
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I also like Wix/Napa. I just switched from Mobil 1 to a K&N for the nut on the bottom.
__________________
2004 Fleetwood Southwind 32VS W20 - SOLD!
ReadyBrute Elite towing a 2017 Ford Edge Sport
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09-13-2019, 10:00 AM
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#11
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Senior Member
Newmar Owners Club Tiffin Owners Club Workhorse Chassis Owner
Join Date: Jan 2015
Location: Byhalia, MS
Posts: 3,368
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I fully agree with the comments about the poor quality of the Fram filters. I'm talking about the basic Fram filter that everyone buys at Walmart. They are junk. I wouldn't trust it as a paperweight. I can't speak to the other ones such as the XG5. Personally, I always like to use the manufacturer's filters. In this case AC/Delco by GM. If you happened to have a Ford V10, then you should use the Motorcraft filter from Ford. If the filter is good enough for the manufacturer during the warranty period, its good enough for me. Also, the manufacturer knows a little bit more about what his engine requires as far as the design of the filter. Wix and NAPA Gold are good filters. There are numerous YouTube videos showing cut apart filters and showing what a cheap piece of garbage the Fram filter really is. They built their following purely with advertising, not with quality.
jt
__________________
2019 Tiffin Phaeton 40IH
2005 Newmar Kountry Star Gas (Sold)
2022 JL Wrangler 4xe or 2017 Harley Ultra in tow
JT, Em & the boys, Kong & Baxter (rescued grey tabbies)
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09-13-2019, 10:41 AM
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#12
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Senior Member
Join Date: Nov 2013
Posts: 5,782
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Quote:
Originally Posted by harleyjt
I fully agree with the comments about the poor quality of the Fram filters. I'm talking about the basic Fram filter that everyone buys at Walmart. They are junk. I wouldn't trust it as a paperweight. I can't speak to the other ones such as the XG5. Personally, I always like to use the manufacturer's filters. In this case AC/Delco by GM. If you happened to have a Ford V10, then you should use the Motorcraft filter from Ford. If the filter is good enough for the manufacturer during the warranty period, its good enough for me. Also, the manufacturer knows a little bit more about what his engine requires as far as the design of the filter. Wix and NAPA Gold are good filters. There are numerous YouTube videos showing cut apart filters and showing what a cheap piece of garbage the Fram filter really is. They built their following purely with advertising, not with quality.
jt
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Just be careful of the ACDelco from Walmart. All the part numbers end in "E" for economy, which are the same as the standard ACDelco.
I typically use the NAPA Gold unless the Mobil-1 is part of a package deal.
For the OP, I would first suspect a loose or damage connection somewhere. Not sure if you have resolved this.
__________________
2015 Tiffin Phaeton 40QBH
2018 Chevrolet Colorado Toad
Roadmaster Tow Setup
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09-13-2019, 11:16 AM
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#13
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Senior Member
Join Date: Feb 2016
Posts: 665
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GM 8.1 workhorse oil pressure
I installed the Wix oil filter on the first, second and so on use Wix on my truck and DW Honda also use the Wix air filter as well not one issue in over all the years just a little higher cost
__________________
Larry and Sheila 2008 Fleetwood Discovery 39R
Retired U.S. Air Force (SAC) Vietnam Veteran
2022 RAM 1500 5.7 HEMI
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