how do I get Pag oil from a compressor out of denim shorts?

Question

do I use hot or cold water?

Answer 1

Apply some Dawn dish liquid directly to the stain. Wash in the safest temperature for the fabric.:)

Answer 2

Here, this looks more useful.

Oil-based Stains
Use heavy-duty detergent with hot water.

Automotive oil
Hair oil
Bacon fat
Hand lotion
Butter/margarine
Lard
Car door grease
Mayonnaise
Collar/cuff greasy rings
Salad dressing
Cooking fats and oils
Suntan oil or lotion
Face creams
Oil stains can be removed by pretreatment with a heavy-duty liquid detergent, an aerosol petroleum-based solvent pretreatment spray, or a pump-type detergent-based pretreatment spray. If these products are unavailable, you can use a powdered detergent that is mixed with water to make a runny paste and apply that to the stain.

The heavy-duty liquid detergents or aerosol sprays are more convenient and effective. Work the full-strength heavy-duty liquid detergent into the stain or spray with the pretreatment product, then wash the garment using hot water (if safe for fabric), the recommended amount of detergent for a regular laundry load, rinse, and inspect before drying. Repeat this treatment if removal is incomplete the first time.

http://ohioline.osu.edu/outside/stainrem.html#cos