They are the same basic grease except the 115 isn't quite as thick so it flows through the fitting and into the mechanism better.I know this is an old thread, I did a search because so many jump the gun on "beating the dead horse" about revisited topics...
I am wondering what the difference is between the 105 and 115 IR air tool oil and grease... I have the 2135QTiMax

When I worked at the shop, I never seen anybody put grease on their IR's.![]()