I am using the brew in 5 cars now, I believe the answer is no, you add about 1-3 oz of LC per 1000 miles after the initial brew. Suggested ratio of 3:1 #132 to LC and 8 oz of the brew at time of oil change primarily for dino oils and Mobil 1. Also, the brew should not be used with redLine and if using Amsoil the #132 is, perhaps, not necessary just the LC. I use Amsoil and the brew The brew may, it appears, change the viscocity of the Amsoil from a 30W to a low 40W. It did on my first UOA on one car but because it is a high mileage car this is fine with me. Also produced some of the lowest wear numbers I have seen in many years on this engine but that is only one sample, nothing more. So, verdict is still out.
Perhaps others can chip in their formulas or usage.
[ October 07, 2003, 09:43 AM: Message edited by: Spector ]