It is 30 weight. This is an add for Poulan Pro bar oil.
"Premium Bar & Chain Oil:
For Better Protection of your Bar & Chain
Red Dye for Improved Visibility
Also for use in and ALL other Chain Saws
30WT Oil"
Here's another for T. S. Moly Lubricants:
TS Bar and Chain Oil is a premium oil. Unlike other chain saw oils, TS Bar and Chain Oil contains molybdenum disulfide, which is a solid lubricant additive known for its ability to significantly reduce friction and wear.
Also present are components designed to reduce rapid oxidation of oil (from heat generated in the sawing process), to prevent foaming of oil (foam is air that voids lubrication on a microscopic scale) and to increase the "stickiness" of the oil (so it adheres better to the metal).
TS-Bar and Chain Oil meets the requirements of API SA and GL-1.
Specifications
SAE Grade 30
Viscosity, SUS
@100°F 750
@210°F 61
Pour Point, °F 5
Flash Point, °F 410
Molybdenum Disulfide, % 0.5