Transmission Gear Oil for Enstrom 280

[Greenvalley285]

Service Manual of Enstrom 280 helicopters, has recommended certain manufacturers/ Gear Oils for use in transmission of Enstrom 280 helo. These gear oils are compliant with SAE-J2360/ API GL-5. For Exxon Mobil Corp, four oil names are listed (Mobil 1, Mobil delvac (both synthetic gear oils), then Mobilube HD LS 80W-90 & Mobilube HD Plus 80W-90).

Now, we are supplied with Mobil Mobilube 1 SHC 75W-90, but this is not listed in Enstrom Service manual. This oil factsheet says it has the approval of SAE-J2360 and meets/ exceeds  requirement of API GL-5.

Is it good to use in Enstrom transmissions.