I am just about to change the oil in my trans and accessed the site to find the . quantities. I purchased all of the ingredients about a year ago and find that I have the Redline Lightweight shockproof. I was sure it was right at the time. Reading several forums in here I see that a lot of owners are using the lightweight. However the answer and instructions to the question very clearly state the use of the heavyweight oil. Help, which one is it?