In the aircraft mounted accessory gearbox and gas turbine engine gearbox, a significant rise in temperature of lubricant was consistently observed which was due to the high CoF between the moving parts. This phenomenon limits the speed and power transmission of the gearbox. To resolve this, the current study recommends adding specific nanoparticles as an additive to the MIL grade lubricant to reduce frictional resistance between the gears. Surfactants were also added to h-BN and MoS2 nanolubricants to improve nanoparticle suspension. Tribological investigations were conducted with a four-ball tester, a shear stability tester, and a reichert tester to examine the lubricants. During the four-ball test, the wear scar diameter on the specimen decreased by 16.73% and 12.3% with h-BN and MoS2 nanolubricants (NL) respectively compared to the results obtained using the base lubricant. In shear stability test, h-BN nanolubricant demonstrated 93%, and MoS2 nanolubricant demonstrated 67% more shear stability than the base lubricant while the CoF was reduced by 13% in both h-BN and MoS2 nanolubricants during reichert test. These test results prove that h-BN and MoS2 nanoparticles, when added to a military standard base lubricant, can demonstrate improved tribological capabilities even at extreme operational conditions.