Recent Topics
Are 3/4" 16 UNF and 3/4" 16 UNF-2B the same thread
by FordCapriDriver
06/28/17 04:11 AM
Engine vibrates and idle RPM lowers using window
by Datarock
06/28/17 02:57 AM
Just accepted a job offer, new interview coming
by PandaBear
06/28/17 02:28 AM
Good luck, you'll need it.
by DeepFriar
06/28/17 02:17 AM
Parked car with deflated tires, sidewall damage?
by HKPolice
06/28/17 12:21 AM
How to clean out a 200k old 1MZ-FE on a Toyota
by zerosoma
06/27/17 11:59 PM
Replaced Differential fluid today
by barkingspider
06/27/17 10:24 PM
When did PUP 0w20 get Dexos?
by lukejo
06/27/17 09:52 PM
Mortgage Lender and the almighty FICO score
by SVTCobra
06/27/17 09:46 PM
The Bahawalpur tragedy
by Stelth
06/27/17 09:43 PM
Filter for B&S 724 cc V-Twin
by Astro_Guy
06/27/17 08:59 PM
diesel engine oil seems to be failing at 5000 mile
by perplexed
06/27/17 08:58 PM
Shoe sizing?
by Eddie
06/27/17 08:40 PM
Switching from M1 to Castrol Edge-Both Euro 0W-40
by WhizkidTN
06/27/17 08:35 PM
Thin or thick: an excerpt from a classic ASTM book
by Gokhan
06/27/17 08:25 PM
2012 yaris flush?
by macdole99
06/27/17 08:15 PM
Acid filter fail
by T-Bone
06/27/17 08:14 PM
5W-30 for longer engine life?
by flinter
06/27/17 07:38 PM
AutoZone is having a Sale. So prices went up...
by Oro_O
06/27/17 07:12 PM
01 Tahoe Instrument cluster failing...
by mjk
06/27/17 06:27 PM
Newest Members
gwarrior4u, Airbum787, mrj1, Nutch, motorcycler
61995 Registered Users
Who's Online
79 registered (Ammofirst, 2009Edge, aquariuscsm, 2015_PSD, Astro14, ARB1977, 4 invisible), 1557 Guests and 9 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
61995 Members
66 Forums
267142 Topics
4418446 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Topic Options
#1551185 - 08/01/09 08:09 PM High Vacuum Pump Oil
TxGreaseMonkey Offline


Registered: 07/14/05
Posts: 313
Loc: Texas
What specific synthetic high vacuum pump oil would you recommend for a U.S. General (Harbor Freight #98076) 2.5 CFM Vacuum Pump? No vacuum pump oil information was provided with the product.
_________________________
Amsoil ASL, GLC, ATF, MTF, PSF, ATP and PureOne Filters.

Top
#1551258 - 08/01/09 09:00 PM Re: High Vacuum Pump Oil [Re: TxGreaseMonkey]
tom slick Offline


Registered: 05/26/03
Posts: 9133
Loc: Central Coast, Calif.
Vacuum pumps take a specific oil. Mobil sells it by the quart. Grainger and mcmaster-carr both carry it.
_________________________
You get what you pay for...
So keep in mind how much you paid for this advice.

Top
#1551943 - 08/02/09 03:54 PM Re: High Vacuum Pump Oil [Re: TxGreaseMonkey]
Pablo Offline


Registered: 10/28/02
Posts: 47131
Loc: Duvall WA - Pacific NW USA
As far as I can tell most of these smaller "home" unit vacuum pumps take ISO 68 viscosity oil. Robin sells one as does Mobil (Cross reference to Amsoil PCJ PCJ LINK ). Both are petroleum/conventional base oils. The only thing special about these oils, are the low vapor pressure and the dryness.

I have recommended PCI PCI LINK for smaller vacuum pumps and PCK PCK LINK for the bigger pumps in the past with great success, but I hesitate a bit because I just don't know exactly what the supplied HF oil is. I doubt there would be any problem with a 50/50 PCI/PCK (same as PCJ PCJ LINK ) mix as other folks have done in the past with similar vacuum pumps.

Top
#1551978 - 08/02/09 04:28 PM Re: High Vacuum Pump Oil [Re: Pablo]
Chris142 Offline


Registered: 06/05/03
Posts: 15205
Loc: apple valley, ca
We get vacuum oil from Napa. Comes in a qt container.
_________________________
02 Wrangler super-s 10w30
87 F250 proline 15w40
04 Tahoe super-s 5w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Can am maveric edge 5w40

Top
#1552485 - 08/03/09 07:34 AM Re: High Vacuum Pump Oil [Re: TxGreaseMonkey]
Pablo Offline


Registered: 10/28/02
Posts: 47131
Loc: Duvall WA - Pacific NW USA
I just got a reply from HF:

 Quote:
The iso is not critical as long as its vacuum pump oil. I recommend the
Yellow Jacket brand, that is what I have used in the past. Vacuum pump
oil is specially designed to absorb air and is non-foaming. Some brands
that I have searched on the internet state iso 100.


With that, I would just get a quart of Amsoil PCK ISO 100 vacuum pump/compressor oil.

Top
#1552628 - 08/03/09 10:21 AM Re: High Vacuum Pump Oil [Re: Pablo]
TxGreaseMonkey Offline


Registered: 07/14/05
Posts: 313
Loc: Texas
I came to the same conclusion (Amsoil PCK).
_________________________
Amsoil ASL, GLC, ATF, MTF, PSF, ATP and PureOne Filters.

Top
#1552674 - 08/03/09 11:09 AM Re: High Vacuum Pump Oil [Re: TxGreaseMonkey]
Pablo Offline


Registered: 10/28/02
Posts: 47131
Loc: Duvall WA - Pacific NW USA
Funny how he says viscosity doesn't matter.

Anyhow - cool - let us know how she goes (sucks...) :)

Top
#1552714 - 08/03/09 11:44 AM Re: High Vacuum Pump Oil [Re: Pablo]
TxGreaseMonkey Offline


Registered: 07/14/05
Posts: 313
Loc: Texas
It's amazing how the vacuum pump manufacturers talk about how critical it is to use the proper high vacuum pump oil and then provide no technical information whatsoever on what the characteristic of that oil should be. This goes for U.S. General (Harbor Freight), Robinair, and MasterCool. I've never seen the likes of it.

Some have said to dump the oil after a month, since it's hygroscopic. Sounds like they are putting this oil in the same league as PAG oil. Any thoughts, Paul?
_________________________
Amsoil ASL, GLC, ATF, MTF, PSF, ATP and PureOne Filters.

Top
#1552837 - 08/03/09 01:44 PM Re: High Vacuum Pump Oil [Re: TxGreaseMonkey]
Pablo Offline


Registered: 10/28/02
Posts: 47131
Loc: Duvall WA - Pacific NW USA
I suppose if you use the pump constantly in very humid conditions, sure.

Top
#1572657 - 08/20/09 09:18 AM Re: High Vacuum Pump Oil [Re: Pablo]
bsmithwins Offline


Registered: 06/24/09
Posts: 261
Loc: OR, USA
I've serviced a lot of rotary oil filled roughing pumps.

I've never noticed a performance difference from different vacuum oil, including pumps using mineral based oils and those using Fomblin type synthetics.

Oil change frequency depends on what you're pumping. Systems with no process gas (or inert gas) and that aren't open to air I've done annual oil changes on. These were pumps that ran 24/7. I have seen oil filled rotary pumps that were used with a gas mix that required the oil to be changed every 3 days. If it wasn't the oil started polymerizing.

BSW

Top
#1573265 - 08/20/09 07:29 PM Re: High Vacuum Pump Oil [Re: bsmithwins]
moklock Offline


Registered: 01/13/09
Posts: 520
Loc: FL
FWIW, I've been running the Robinair oil in the same pump. It is IMO the same thickness as the no-name stuff that came with it, which I ran for only one use then dumped.

Top
#1644631 - 10/24/09 09:33 PM Re: High Vacuum Pump Oil [Re: moklock]
HardbodyLoyalist Offline


Registered: 08/06/04
Posts: 707
Loc: Lower Alabama
I run Robinair oil in all of my vac pumps, both belt drive and direct drive.

It's usually available through air conditioning supply houses.
_________________________
1994 Nissan Hardbody -- Mobil 1 HM 5W30
1998 Ford F150 4WD -- Mobil 1 HM 5W30
2009 VW Jetta TDI -- Pentosin SuperPerformance III 5W30

Top
#2016923 - 09/14/10 02:51 PM Re: High Vacuum Pump Oil [Re: HardbodyLoyalist]
porcupine73 Offline


Registered: 10/06/05
Posts: 664
Loc: Buffalo, NY
I just picked up the 3CFM dual stage version of this pump. The manual says 'Use a low viscosity vacuum pump oil (i.e., HFV-46)'. HFV-46 appears to be an oil of Chinese origin not available in small quantities.

After reviewing this thread and the Amsoil literature, I have decided to use Amsoil PCI (ISO 46 compressor oil) in this application.

Top
#2018485 - 09/16/10 07:45 AM Re: High Vacuum Pump Oil [Re: porcupine73]
widman Offline


Registered: 05/27/02
Posts: 3265
Loc: Bolivia
I looked into one for a milking machine and found the spec sheet. It was regular hydraulic oil.
_________________________
Richard's Car Restorations

Top