Going to be mixing up my first batch as soon as the ingrediants arrive. Have an '01 Toy RAV 4 w/ only 20k miles. Holds 4 qrts of M1 10w-30 oil and was going to add a half pint of Brew at oil change. Do you add more Brew periodically thru the oils cycle? How much? Can The Brew be used in the Tranny?