I'm about to sea foam my 99 5vz @ 218k. Thinking of using the trans tune as well. Anyone heve exp with it?

 

i love this stuff man! I got stuck in like a 3 foot mud ditch (up to my door handles) and my tranny somehow got water in it. my FORMER mechanic told me instantly i would need a new transmission and that there was no chance of saving it with a flush. I flushed it twice, adding this both times and my fluid went from looking like chocolate milk to proper cherry syrup like color. go for it brother!