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General Category => General Discussion => Topic started by: delrod on September 05, 2020, 07:19:34 AM

Title: A real oil thread (minimal guzzi content)
Post by: delrod on September 05, 2020, 07:19:34 AM

The subject is an air compressor with many hours of operation (30,000) and unknown maintenance history. I put it in service with dino oil to get it up and running. After a couple of weeks of running it was changed to a mid range "full synthetic".  A couple of things I saw immediately. Old oil would immediately foam when compressor started (violently). New oil doesn't. Now I will make a couple of assumptions. 1 air is not a very good lubricant 2 air is not the best heat transfer media
Some baseline to start the argument
First oil was generic Iso 46 hydraulic oil (with anti foaming additive
Second oil was commercial Pao46 air compressor oil 150 bucks/ 5 gallon
Third choice would be OEM oil 400bucks/5gallon

Title: Re: A real oil thread (minimal guzzi content)
Post by: SIR REAL ED on September 05, 2020, 08:24:52 AM

Quote from: delrod on September 05, 2020, 07:19:34 AM

The subject is an air compressor with many hours of operation (30,000) and unknown maintenance history. I put it in service with dino oil to get it up and running. After a couple of weeks of running it was changed to a mid range "full synthetic".  A couple of things I saw immediately. Old oil would immediately foam when compressor started (violently). New oil doesn't. Now I will make a couple of assumptions. 1 air is not a very good lubricant 2 air is not the best heat transfer media
Some baseline to start the argument
First oil was generic Iso 46 hydraulic oil (with anti foaming additive
Second oil was commercial Pao46 air compressor oil 150 bucks/ 5 gallon
Third choice would be OEM oil 400bucks/5gallon

I agree on both counts.  No argument here.

Title: Re: A real oil thread (minimal guzzi content)
Post by: RinkRat II on September 05, 2020, 08:34:34 AM

  Is the unit a rotary screw or vane compressor?  Brand of unit?
 
   Paul B :boozing:

Title: Re: A real oil thread (minimal guzzi content)
Post by: delrod on September 05, 2020, 09:59:16 AM

Quote from: RinkRat II on September 05, 2020, 08:34:34 AM

  Is the unit a rotary screw or vane compressor?  Brand of unit?
 
   Paul B :boozing:

Rotary Quincy. My most interesting observation was the distinct difference in the oil foaming as viewed through the sight glass

Title: Re: A real oil thread (minimal guzzi content)
Post by: RinkRat II on September 05, 2020, 10:17:28 AM

     Oil foaming in the sight glass is normal, and yes, some synthetics will foam more or less than others. There is a tremendous amount of air /oil velocity  coming from the air end into the separator tank and when the unit shut's off it may take several minutes for the foam to subside and look like oil again in the sight glass. Some stuff to consider is a full service on the unit , Oil separator element, oil and oil filter, scavenger filter( if it has one) and air filter.  Oil cooler should be blown out externally on a regular basis too.  If synthetic were not available, what does Quincy reccomend, ISO 32or 46 dino. Hope all this helps, more questions, just ask.

       Paul B :boozing:

Title: Re: A real oil thread (minimal guzzi content)
Post by: Two Checks on September 05, 2020, 04:03:47 PM

I noticed the original oil had an anti foaming agent, the other two didn't.

Title: Re: A real oil thread (minimal guzzi content)
Post by: Pizza Guzzi on September 05, 2020, 07:05:40 PM

Oil on threads generally leads to over talking.

Title: Re: A real oil thread (minimal guzzi content)
Post by: lucky phil on September 05, 2020, 07:10:29 PM

Quote from: Pizza Guzzi on September 05, 2020, 07:05:40 PM

Oil on threads generally leads to over talking.

No matter how much care I take I always spill some oil doing oil changes.

Ciao

Title: Re: A real oil thread (minimal guzzi content)
Post by: bigbikerrick on September 05, 2020, 08:00:10 PM

Quote from: Pizza Guzzi on September 05, 2020, 07:05:40 PM

Oil on threads generally leads to over talking.

Thats a deep philosophical statement, right there, Mr. Pizza!   :wink:
Rick.