I have a couple of small leaks in the transmission, one in the cooler line and another where it goes into the side of the transmission case. My question is: will pouring in a bottle of transmission leak-stopper do any good? And if so, what is the best kind to get?
Not directly related to this, but what is the best viscosity of oil to use for a 91 300CE? I know nothing about oil and don't have an owner's manual yet.
Thanks!