I found a post on a snowblower forum and a guy posted that the ATLAS Snowblower gear reducer took SAE 30 lubricant.
http://www.snowblowerforum.com/forum/register.php?a=act&u=81121&i=8a05ce9e44231d4d07dca7b1d7db601decb834ee
All
Saw your posts above, and it looks like you're the go to guys. What kind of fluid is in the transmission (gear reduction) on these models? I picked up one of these a year ago and want to give it a full service before it goes into the rough.