My boss had me service a truck for Norfolk Southern on saturday, did the truck, on board welder/generator, and the air compressor. Anyways, my question concerns the air compressor. One of our guys ordered all the filters ahead of time for the truck, but they did not get oil for the compressor. It looked like the compressor oil had never been changed before, so I figured if they're having me change the filters on it, I better figure out what oil to use. It has a pto driven Vanguard twin screw compressor. I tryed searching online for what oil to use, but did not have much time to do so, and didn't have any luck finding the spec for it. All I could find was the factory Vanguard oil, but it does not tell me what weight it is or what type. My boss wanted me to use our regular 15w-40 HDEO oil, and I said i'm pretty sure most compressors use a non-detergent oil. I wound up using oil we keep in stock for our shops twin screw compressor, AEON 800 oil for Garner Denver twin screw compressors. I don't know what type of oil or weight it is either, but it seems about the same viscosity as the old stuff when I poured it out, but it is dyed red, where as the old stuff I drained out of the resevoir was almost clear like engine oil. Will this stuff be ok in it, or did I screw up? This was what my boss wound up wanting me to use in it, and i figured it was better than the HDEO he wanted me to use originally. Wish he actually gave a [censored] every once in awhile
Last edited: