Hey We are running a Rotary screw compressor in our plant, actually two. When it was first bought the company sold us on Synthetic oil and oil sampling. They'd come out take a sample and send us a report. Never explained what was on the report in detail. When the report said change filter or oil change recommended we'd change. After doing it this way for years. One day a report came back saying something to the effect that "too much free water sample couldn't be tested", we had another sample taken and before the report came back we lost the air end. When we complained to the company selling the service they wanted our maintenance records which we gave them. They then said it wasn't their fault because the oil was only good for 8000 hrs or one year max. We'd gone considerable longer. Live and learn. We switched to their dyno oil and switched it out every 6 months. Then I became boss and decided to go back to the synthetic and do annual changes. The synthetic was relabeled Royal Purple as per MSDS sheet.
Fast forward 10 years and along comes a salesmen from Lubrication Engineers. He sells me his ISO-46 Product #9046. I run it and the next time around he suggest adding oil sampling. Well we pulled the first sample at 7 months and the Phosphorous went from 508ppm to 11ppm. The sales guy stopped out and said time to change he isn't sure why its dropped so much. Acid Number went to 0.86 and Viscosity (40°C) went from 48.6 to 54.0.
OK so we change it in under 1 year I'm not happy but hey we caught it before there was trouble.
I sent off a virgin sample and then another at 2 months 1100 hours run. Virgin came back with 674 Phosphorous!! The two month came back it was down to 25ppm, Acid number is 1.84 Vis.cSt 53.7. Comments are generic stating it doesn't mean that the oil is out of ISO specs, just that it isn't where it should be for this particular oil.
I have an email in to the sales guy to see what he has to say. For his prices I may as well buy Amsoil which is said to be an 8000 hour oil and even if I changed it at 4000 hours its half the price.
Can anyone chime in as to what might be going on here?
Thanks in advance,
Fast forward 10 years and along comes a salesmen from Lubrication Engineers. He sells me his ISO-46 Product #9046. I run it and the next time around he suggest adding oil sampling. Well we pulled the first sample at 7 months and the Phosphorous went from 508ppm to 11ppm. The sales guy stopped out and said time to change he isn't sure why its dropped so much. Acid Number went to 0.86 and Viscosity (40°C) went from 48.6 to 54.0.
OK so we change it in under 1 year I'm not happy but hey we caught it before there was trouble.
I sent off a virgin sample and then another at 2 months 1100 hours run. Virgin came back with 674 Phosphorous!! The two month came back it was down to 25ppm, Acid number is 1.84 Vis.cSt 53.7. Comments are generic stating it doesn't mean that the oil is out of ISO specs, just that it isn't where it should be for this particular oil.
I have an email in to the sales guy to see what he has to say. For his prices I may as well buy Amsoil which is said to be an 8000 hour oil and even if I changed it at 4000 hours its half the price.
Can anyone chime in as to what might be going on here?
Thanks in advance,