Anyone ever use Lubrication Engineers / Monolec Syn - All Climate Gear Lubricant 9919 (75W-90). Just wondering how it holds up in manual transmissions and differentials. Looking at the PDS information sheets it has some good numbers for low temp pour point (-60F), flash point (414F), 100 deg viscosity of 16 and 40 degree viscosity of 115. It also meets a lot of performance requirements.