I finally bought a nice sized big unit. 7 Hp, 60 gallon tank.
I dont want to put run of the mill Air Compressor oil in it.

Can anyone recommend some tough oil, even the Synthetic kind they use in those big Sandblasting Units that run continuously?

We used straight 30w oil in the compressor where I used to work.

this unit is worth more than each of the last two cars I bought--

I bought two cars at $500 each, they had shot trannies and I brought them back to life and I use them as daily drivers so I didn't feel that guilty when I bought this thing.

However, why is is by the time you can afford a good tool in your 40's you dont use them as nearly as much when you fiendishly worked hard around the clock with C(%*)p tools in your 20's and 30's

Straight 30w synthetic.
You could even run transmission fluid.

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'85 300SD (formerly california emissions)
'08 Chevy Tahoe
'93 Ducati 900 SS
'79 Kawasaki KZ 650
'86 Kawasaki KX 250
'88 Kawasaki KDX200
'71 Hodaka Ace 100
'72 Triumph T100R

What does the mfg specify?

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Gone and still missed...1982 w123 300D, 1991 w124 300D

A rrgrassi said what the mfg. specifies is the most correct suggestion.
They make oil for air compressors (Autozone has it) and I believe it is non-detergent oil (for piston type air compressors).
The only Rotary Air Compressors I have experience with used what looks like Dextron ATF.

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84 300D, 82 Volvo 244Gl Diesel

Amsoil has a couple different weight compressor oils. That is what mine is getting the next time I change it.

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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

I've got a 2 stage 80 gall unit pumps to 175lbs and I use it daily for the past 17 years incl. occasional sandblasting which makes the unit run constantly to keep up. I use straight 30.

I don't think I would start right with synthetic so that the rings can seat. That is the way lawn tractors say to start out........

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John