Ken,
Thanks for your e-mail. PEAK LONG LIFE and PEAK GLOBAL LIFETIME can both be used in all makes and all models and can also be mixed together.
One main difference between the two is that PEAK GLOBAL LIFETIME is a premium product with a special corrosion inhibitor that allows us to offer a lifetime warranty.
PEAK LONG LIFE utilizes an older yet still good extended life technology inhibitor package that is designed for 5 year 150,000 mile protection.
Yes, PEAK LONGLIFE is an 2-EH formulation.
PEAK Tech Dept.