[Shop-talk] Compressor Oil

[Jack Brooks]

Moose,

Uh-Oh, I've been using Mobil 1 full synthetic automotive oil in my typically lightly used 5HP compressor for about 20 years, changing it very irregularly.  I did run the compressor with the tank valve wide open for a few hours with mineral oil for break-in first, before draining and switching to the synthetic (a typical automotive practice).  I'm more concerned about the tank rusting through than I am the compressor's life.

Sludge buildup is a surprise to me.  Is it possible your sludge issue is not related to the type of oil, but perhaps a condensation issue?

Jack

From: Shop-talk <shop-talk-bounces at autox.team.net> On Behalf Of Moose
Sent: Friday, January 5, 2024 6:52 AM
To: Shop-talk at autox.team.net
Subject: [Shop-talk] Compressor Oil

I have a nice Eaton compressor (7.5HP) that has been flawless since I got it (not, the first one I got had a bad weld, but they replaced it, free, right away.)

Anyway.  I maybe let the oil go a little too long between changes, but when I went to change it this time, the oil was filled with sludge.

I use the Eaton oil, and the compressor is not overworked ever.  It was a pain to clean it out.
In the manual, it says I can't use automotive oil (and I can understand that.) but it just has a Eaton part # for their oil.  No alternatives or specs

The problem is that ordering the oil from them is a pain (you have to fill out a form. Then wait for them to send an invoice a few days later, then pay the invoice and wait for them to ship it.)

Don't get me wrong, I think they are a great company, but I wanted to find out if  can get the same (or better) oil from a place that is a little easier to deal with.  Ideally, I would love to find the correct oil on Amazon and set up a 'reoccurring delivery' for every 6 months so it reminds me to change the oil.

OR, is their an oil that doesn't turn to sludge and is easy to change?

Again, overall, I am not looking for a cheaper oil, just one that is easier to get and or better.

Thanks!

Moose
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