Just added 6.5 oz Sea Foam to 6.5 quarts of oil in 2003 Toyota Tundra. First time. Guy at parts shop sounded the alarm, saying it will “cut” oil and cause poor lubrication.” Told story about customer who came in with oil “pouring out the main seal” because Sea Foam “ate” the gaskets. I researched Sea Foam fairly well and only saw a couple tales like this, but I just want to be certain that my old reliable farm truck engine won’t be damaged. I know, I know, the guy was probably a little bit histrionic, but I just want to be very, extremely, totally sure it’s ok. Thank you very much for your understanding and reassurance.