[Shop-talk] Compressor Oil

[Bob Spidell]

My late father had a 5HP, 60gal DeVilbiss he bought probably 30 or more 
years ago; it gets light/medium duty on our ranch. He probably changed 
the oil a couple times but not in the last 10 years or so that I know 
of. The motor cooked a while back--after a large painting job--and I 
installed a new one with a new belt, and changed out the oil. I did a 
lot of 'shopping,' but was mostly considering price. These days, 
synthetic is often the same price or even cheaper and I think 
by-and-large it's better oil (the old tractors still get cheap mineral 
10W-40, the Healeys get Valvoline 20W-50 Racing and the Mustang gets 
Ford's ubiquitous 5W-20 semi-syn; free from the dealer). I settled on this:

https://www.amazon.com/gp/product/B094S6FKF4/ref=ewc_pr_img_1?smid=A1UZMJJOVEC3U&th=1

I pumped the old oil out the top with a vacuum unit and didn't see any 
evidence of sludge and, actually I wouldn't expect any since you're not 
dealing with combustion byproducts.

Bob

On 1/5/2024 6:51 AM, Moose wrote:
> 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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