1984 300DT; I need to change the transmission fluid. Somewhere on this forum someone mentioned a pan or mat they bought from a home improvement store, i.e. Home Depot or Lowes that worked well to catch excess fluid and keep it off the garage floor. Does anyone know or remember what it is?

the concrete mix pan works well for a catch pan

https://www.homedepot.com/p/Plasgad-Black-Large-Concrete-Mixing-Tub-887102C/205451585

the drip pan is for protecting the floor from drips and small leaks

https://www.homedepot.com/p/Lumax-47-in-x-25-in-x-1-2-in-Galvanized-Drip-Pan-LX-1715/302544905

Those look nice; I believe I'll go check it out.

I bought the same at advance auto

https://shop.advanceautoparts.com/p/flotool-galvanized-drip-tray-11430mi/9016759-p?product_channel=local&store=5450&adtype=pla&product_channel=local&store_code=5450&gclid=EAIaIQobChMIm9bfw7Hs6wIVA4-GCh1b3AuYEAQYAiABEgLUlvD_BwE&gclsrc=aw.ds

That concrete mixing pan look perfect, what a good idea. My little drain pan is way too small, time to upgrade.