Wednesday, December 16, 2009

Can I use synthetic Oil in my air compressor?

I have a 20 gallon 5 hp air compressor that trips my breaker when it is cold. I have heard synthetic oil does not thicken in the cold. The compressor currently uses a SAE 30, what type of synthetic is compatible if I can use it.Can I use synthetic Oil in my air compressor?
I would think a mobil or delcron 10W30 would be safe to use. It is a better lubricant.Can I use synthetic Oil in my air compressor?
you can't use oils with viscocity additives in air compressors. please don't take his advice, winter grades will ruin the compressor!!!!!! a better lubricant??? wow. (BTW by winter grades i mean the ';w'; of 10w30. do your homework.) Report Abuse

you are correct. synthetic oil does not thicken in the cold. however, there's more to the story. Group IV (4) and Group V (5) base oil (synthetics) are chemically made from uniform molecules with no paraffin and don't need Viscosity Additives. However, in recent years Group III (3) based oils have been labeled ';synthetic'; through a legal loophole. These are petroleum based Group II (2) oils that have had the sulfur refined out making them more pure and longer lasting. Group III (3) ';synthetic'; motor oils must employ Viscosity Additives being petroleum based. As more and more large oil companies switched their ';synthetic'; motor oils to the less expensive/more profitable Group III (3) base stocks it has become much easier to identify which are PAO based true synthetic. Of the large oil companies, only Mobil 1 is still a PAO based true synthetic. The rest, including Castrol Syntec, and Quaker Q have switched to the cheaper/more profitable Group III (3) petroleum based ';synthetic'; motor oil. (that's why mobil1 is so darn expensive) Hope this helps!
Yes, and there are several different types. Here's a case study by Amsoil on compressor oils: http://www.amsoil.com/products/industria鈥?/a>


more info here at my website: http://www.number1synthetic.com


click 'Other Links' and then 'Browse Amsoil Products' to find compressor oils


Good luck!
  • say yes
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