I've been thinking of adding Lubegard to the ATF+4 used in our 2007 Dodge Grand Caravan w/ 3.3 and 4-speed AT.
No driveability issues, simply wanting to keep the transmission as healthy as reasonably possible.
Shortly after we bought the van almost four years ago, I replaced the transmission oil pan with a pan with a drain plug. At the time of the pan replacement, I replaced the filter.
That was at 199,000 km (c. 124,000 miles). We're now at 265,000 km (c. 164,000 miles), and I've done several drain-and-fills. Each drain is about 2.5 US quarts.
For the first fill (with the pan drop) and several after that, I added Castrol synthetic ATF+4.
I couldn't find the Castrol last time, and bought NAPA-branded ATF+4.
So why do I want to add Lubegard?
If the transmission fails, the cost of a repair would likely exceed the value of the van. It's not worth much, but has served us well, and I think will continue to, barring a major mechanical failure. It would be good if it lasts another couple of years, to get us through the grandchildren's multiple-car-seat era. I figure the Lubegard would be cheap added insurance, and will buy me some peace of mind. (I probably don't actually have to justify this to the BITOG crew.)
So, which Lubegard product would you recommend for my application?
Thanks!