What grade oil do I use - Craftsman 3 gal. Air Compressor, 1 hp, Tank

1st find out what Toyota specs are , but in general , no , do not use any grade oil other the specified .
Mixng the oil grades id just wrng and will destroy your $5.000 engine over a few dollar saving...
DO NOT CHANGE THE GRADE OF OIL , USE ONLY THE RECOMENDED GRADE... THE BRAND : CASTROL GTX ONLY
most other oils are recycled garbage...

Hi Stan:
Don't know where you are, but in this corner of Canada you can get summer grade, or winter grade bar oil. The summer grade is quite a lot thicker consistency.
If you're using ordinary oil like 10-30 it will definitely run through much faster.

You can use a 10w-40 grade premium oil or synthetic blend oil
.....OR.....
a fully synthetic in 5w-30 grade which is better but more expensive.

When selecting the oils in either grade make sure the one you choose is approved for Ford vehicles by checking the label details. Oil companies manufacture 2 or 3 different formulations of oils in the same grades and the label (usually the back label on the pack) will indicate that the oil is formulated for the engines of specific car manufacturers.

You need compressor oil which does not have detergents. Don't use thin motor oil it may lessen the life of the compressor. I don't think a grade is generally specified although its around a 20 grade
here are some examples Compressor Oil

Hi and welcome to FixYa, I am Kelly.

Compressor grade oils are basically SAE30 W oil. Read this:

Rol-Air OILCOMP30W34C Air Compressor Pump Oil - 30W Quart features ,
Specially engineered and tested to match the requirements of Rol-Air air
compressors , Provides superior rust and corrosion protection.

I.e SAE 30W oil / the same thing you would use in an older lawn mower engine or generator.

What they don't tell you is because they have re-labeled the 30W oil to OILCOMP30W they can charge you big time for SAE 30W oil. The only difference is the label.

Thanks for choosing FixYa,
Kelly

Lubricants and capacities
Engine oil options
Ambient temperature range Cold climate
Engine oil grade SAE 5W/30
Engine oil classification API/ACEA SJ/A2
Ambient temperature range Moderate climate
Engine oil grade SAE 10W/30
Engine oil classification API/ACEA SJ/A2
Ambient temperature range Moderate climate alternative
Engine oil grade SAE 10W/50
Engine oil classification API/ACEA SJ/A2
Ambient temperature range Hot climate
Engine oil grade SAE 10W/40
Engine oil classification API/ACEA SJ/A2
Engine with filter(s) litres 4,5

using a high grade full synthetic is the best.
the oil grade which is 10w30 is for average driving conditions.
for winter,5w30 and 10w40 for summer is also recommended by alot of car manufacturers.The oil filler cap will tell you the oil grade.

Singer sewing machine oil, a very light food grade oil, or light grade mineral oil.

Do not use cooking oil, baby oil or olive oil as they are all too "heavy"

Depending on your location, 10W-30 is fine.