Hey scotty, I got a 2007 corolla s. The automatic transmission fluid overheated from a leaking radiator issue. This made the transmission fluid thick, driving rough, so I changed the transmission fluid/filter and radiator. It help the rough driving a lot, but slips going up each gear slightly; no issue down shifting. When I have car full of people it shifts a-little better. Will Lucas stops slip be okay to try?
slips going up each gear slightly
It's not slippage, it's flaring -
So that's an issue with the solenoids, usually, not the friction packs.
Try disconnecting the battery for a while to let the TCM try and relearn first.
fluid/filter
What about the filter in the radiator return hose.
Will Lucas stops slip be okay to try?
Try additives only if you're planing to junk the car.
Your best option is a junkyard transmission anyway.
