wayne everet,phd said he advised to use the heavy duty when towing etc. and to use the bio tech for your daily driver..pat at lubegard ,thought they were the same product only in a larger 32oz container its such a new item ..chemist did not say if it was the same product..therefore, iam going to use the heavy duty engine protect.pat at lubegard said its loaded with tons of moly and boron!!the doses are the same 3oz.per sump qts.
dailydriver, the bio tech and the heavy duty are different items..