Addig any lubricant where not specified will make the actual torque higher than specified

not more accurate. Most specs are given with the assumption of a light oil on the threads nothing more. In the case of our dually flange nuts,they call for a drop of oil where the flange washer and nut ride together.
TORQUE
DESCRIPTION N·m Ft. Lbs. In. Lbs.
1500 Series Lug Nut 9/16 X 18 with 60° Cone LD 176 130 —
2500 & 3500 Series Lug Nut 9/16 X 18 with 60° Cone HD SRW 190 140 —
3500 Series Lug Nut 9/16 X 18 with Flat Washer HD DRW 197 145 —
Bob