Hi Tyler,
good effort there. Many years ago when I was heavily playing with Toranas and had had a couple of rebuilt motors, in mine I was using Penrite and I did an oil change to another type (sorry can't remember what it was but it was in a red bottle, some American brand) anyway the upshot was as soon as I took it for a drive the temp went up 10 degrees. I went back to Autobarn and asked why this was the case and they had no answer. With my wifes Torana with the new built motor I could not cool it, tried everything we could think of, but she was unable to drive it on any hot day because the temp instantly went off the dial. I had had a huge radiator made for it and was even considering getting another made to fit down the back behind the diff. A mate was a distributor at the time for Bitron and he asked me to come around because he believed he could fix it. Very sceptical of any of these snake oil things I brought a bottle home and it was a stinking hot day, put the bottle in and told my wife to drive it around the block which is about 10ks. She protested saying it would blow up but I told her I didn't care anymore because I was over it and just do it. She drove around the block came back and I asked her what the temp was like and it was fine, so I said go around the block again and that was the end of the overheating problems with that motor, till my son took over the car and a blown heater hose was the end of that motor. He still drives that Torana today, but the motor now in it is nowhere near as good as the one he cooked. Bitron was amazing stuff but like all really good products somebody buys it up and shuts it down because it may be impacting their business