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Air Compressor Oil #5019623 02/21/19 11:12 PM
Joined: Aug 2007
Posts: 1,831
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Michael_P Offline OP
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Its been a week now since I changed oil on my DeVilbiss 6.5HP 240V air compressor. Ive had this compressor since new for 20 years, no issues. This compressor calls for SAE20 ND on the label on the compressor (No ISO recommendations). I try to guesstimate 100 hours of use, then change the oil. Last week I was in a rush and picked up some Amsoil air compressor oil at the local NAPA, not realizing the weight was ISO 100 (SAE 30/40) instead of ISO 46 (SAE 20). After draining the old oil and filling the compressor with the ISO 100, it seems to run quieter and fill the tank faster. This compressor is in a heated garage and will never operate under 60 degrees F, even if its minus 20 F outside. Are there any long term issues of running this (ISO 100, SAE 30/40) oil in my compressor that calls for SAE 20? If the consensus is to change to the recommended SAE 20, its no big deal. Oil is cheap and it takes 5 minutes to change. This compressor is used a fair amount for sand blasting and other continuous use tasks.

Thanks in advance

Re: Air Compressor Oil [Re: Michael_P] #5019639 02/21/19 11:26 PM
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Chris142 Offline
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Run it.


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: Air Compressor Oil [Re: Michael_P] #5019699 02/22/19 04:12 AM
Joined: Nov 2013
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fozzdesy2001 Offline
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If you want some great compressor oil try this DEWALT D55001 Synthetic Compressor Oil. Kind of expensive but it really helps with continuous running pumps.

https://www.amazon.com/DEWALT-D55001-Synthetic-Compressor-Quart/dp/B0008GLW9Y


2001 Subaru Forester S
Replaced with a 2006 Forester

2004 Subaru Forester XT
Death by deer. Replaced with 2003 Impreza Outback Sport (beater)
Re: Air Compressor Oil [Re: Michael_P] #5019717 02/22/19 05:22 AM
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billt460 Offline
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I purchased my compressor back in the 80's when I lived in the Midwest. The only problem I had with it, was when I used it in cold Winter weather. The oil in the compressor from the factory was too thick, and caused the breaker to trip. So I drained it and refilled it with Mobil 1 0W-30. (At least that's what I think it was. It was the thinnest Mobil 1 I could find at the time). It solved the problem, and the compressor would start and run on the coldest Winter days without a problem.

When we moved to Arizona it ran the same. I finally changed the compressor oil this past year. It drained out every bit as clean as it went in. I refilled it with the same 0W-30 Mobil 1. Even on 100F+ degree days, it never runs long enough, or hot enough for my use, to where I can't place my hand on the cylinder head. It's now 34 years old and still going strong. It gets run every time I clean my guns. Which is usually at least once a week.

Re: Air Compressor Oil [Re: Michael_P] #5019753 02/22/19 06:43 AM
Joined: Jul 2005
Posts: 33,399
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demarpaint Offline
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I have Royal Purple compressor oil in my 60 gallon compressor. It got good reviews here years ago. It works much better than it did with the factory fill in the cold weather, and much like billt460's compressor I can touch the cylinder head during summertime use


God Bless Our Troops

Re: Air Compressor Oil [Re: Michael_P] #5019765 02/22/19 07:02 AM
Joined: Nov 2006
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Trav Offline
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Run the 30w under those operating conditions. FR Sport has Redline 20w and 30w on sale now for anyone needing it.

https://frsport.com/redline-31304-e...myrLP4AIVjI3ICh05YgXrEAQYBSABEgLPhfD_BwE

https://frsport.com/redline-31204-each-oil-31204-polycomp-20wt-compressor-oil-1-quart


ASE L1, Master. Deutsch Meisterbrief.
Re: Air Compressor Oil [Re: Michael_P] #5019772 02/22/19 07:07 AM
Joined: Oct 2002
Posts: 47,311
Pablo Offline
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Posts: 47,311
Originally Posted by Michael_P
Its been a week now since I changed oil on my DeVilbiss 6.5HP 240V air compressor. Ive had this compressor since new for 20 years, no issues. This compressor calls for SAE20 ND on the label on the compressor (No ISO recommendations). I try to guesstimate 100 hours of use, then change the oil. Last week I was in a rush and picked up some Amsoil air compressor oil at the local NAPA, not realizing the weight was ISO 100 (SAE 30/40) instead of ISO 46 (SAE 20). After draining the old oil and filling the compressor with the ISO 100, it seems to run quieter and fill the tank faster. This compressor is in a heated garage and will never operate under 60 degrees F, even if its minus 20 F outside. Are there any long term issues of running this (ISO 100, SAE 30/40) oil in my compressor that calls for SAE 20? If the consensus is to change to the recommended SAE 20, its no big deal. Oil is cheap and it takes 5 minutes to change. This compressor is used a fair amount for sand blasting and other continuous use tasks.

Thanks in advance


No problem running it at your ambient temps.


DIRECT JOBBER - PABLO - for all your Amsoil needs
http://oilslubesandfilters.shopamsoil.com/


Re: Air Compressor Oil [Re: Trav] #5019789 02/22/19 07:20 AM
Joined: Jul 2005
Posts: 33,399
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demarpaint Offline
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Originally Posted by Trav
Run the 30w under those operating conditions. FR Sport has Redline 20w and 30w on sale now for anyone needing it.

https://frsport.com/redline-31304-e...myrLP4AIVjI3ICh05YgXrEAQYBSABEgLPhfD_BwE

https://frsport.com/redline-31204-each-oil-31204-polycomp-20wt-compressor-oil-1-quart


Those are good prices for RL compressor oil.


God Bless Our Troops

Re: Air Compressor Oil [Re: demarpaint] #5019845 02/22/19 08:21 AM
Joined: Nov 2006
Posts: 22,582
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Trav Offline
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Yep, I got 5qts of the 30w, 4 for the sump and 1 to top off.


ASE L1, Master. Deutsch Meisterbrief.
Re: Air Compressor Oil [Re: Michael_P] #5020144 02/22/19 12:29 PM
Joined: Jul 2005
Posts: 33,399
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demarpaint Offline
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I grabbed 2 of the 30w. That should hold me for quite a while.


God Bless Our Troops

Re: Air Compressor Oil [Re: Michael_P] #5027598 03/01/19 11:08 AM
Joined: Feb 2007
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Anduril Offline
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I use Mobil 1 AFE 0w-20 in mine. Makes a huge difference as to whether or not the motor actually starts and runs at the end of a long extension cord. Using generic "compressor oil," the motor would just hum and trip the breaker in colder weather after about 100' of cord or so.


2015 Nissan Versa Note 1.6/5MT
2012 Toyota Tacoma 2.7/4AT
2007 Toyota Camry 2.4/5AT
2005 Nissan XTerra 4x4 4.0/6MT
2002 Mustang GT Convertible 4.6/5MT
2009 Kawasaki Vulcan 900
2013 Hyosung ST7
Re: Air Compressor Oil [Re: Michael_P] #5027797 03/01/19 01:28 PM
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JHZR2 Offline
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I noticed on my compressor, that going to Amsoil compressor oil was a welcome change. I could fairly easily feel less heating on the head for my uses, though no calibrated result.

I would somewhat doubt that it would be filling easier, but I can see that the heavier oil might help with a tighter seal inside, plus reduced friction might allow marginally faster RPMs.

I’d personally change it after some use (a shorter oci), but unless you can reuse it somewhere for something, I’d run it for at least a little while to recoup some utility cost.

Re: Air Compressor Oil [Re: Michael_P] #5028245 03/01/19 07:42 PM
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HangFire Offline
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Detergent (motor) oil in humid environments can foam and gum up the valves. Many get away with it, some don't. I stick to non-detergent compressor oil in mine.

For continuous use in a heated garage, I would upgrade to 30W synthetic anyway.


Various musings: http://hangfire.net
Re: Air Compressor Oil [Re: Anduril] #5028483 03/01/19 10:58 PM
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user52165 Offline
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Originally Posted by Anduril
I use Mobil 1 AFE 0w-20 in mine. Makes a huge difference as to whether or not the motor actually starts and runs at the end of a long extension cord. Using generic "compressor oil," the motor would just hum and trip the breaker in colder weather after about 100' of cord or so.


Use 100 ft of air hose, not 100 ft of electrical line.

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