I'd be happy to tell you about Lucas.
it's the original snake oil.
It's nothing more than a thickening agent with no chemistry to help anything.
It relies on thickening to stop leaks, the theory is the thicker the oil, the less likely a leak. Wrong answer!
the only truth on their labels is 100% petroleum. It is. there's no chemistry added to help seals or detergents to help clean.
You don't want a thick ATF
, you want it to be able to flow.
can't flow through the solenoids all to well.
the seafoam trans tune is nothing more than a stronger version of regular Seafoam, with a red dye. It does work and does what it says it does.
I usually add it about 500 miles before I'm going to do my trans service. Give it some time to break up sludge & dirt. I use it for my p/s pump and rack as well.
It is safe to leave the trans tune in full time, it will dissipate over time anyway.
I have nothing good to say about Lucas and go out of my way to talk people out of all of their products, especially the fuel treatment.. it's nothing more than lightweight machine oil. it lubricates.. doesn't do a whole lot for cleaning injectors.
The ONLY additive that I've ever used that works in a transmission is:
Lubegard Red (bottle).
my ever so slipping 1992 Taurs tranny with the axod-e, grips, shifts smooth and climbs hills like it's new, this is a tranny with 223k, never been rebuilt.