Years ago it was a fairly common practice among snowbirds, but today's cars are significantly different and don't handle idling for hours at a time that well. We've towed two automatic 4WD Toyota RAV 4's for a total of close to 50,000 miles now with the same Remco lube pump installed with no significant problems. Our first RAV4 toad was a 2002 that we towed almost 30,000 miles and it's still in service as a spare car we keep at our upstate NY family cottage. The only transmission problem its ever had was a broken shift cable that had nothing to do with towing it. At sub-32℉ temps, we sometimes start the RAV with the remote start fob to warm up the tranny fluid some before towing. Occasionally the RAV will still be running when we head down the road, but times out a few minutes later.
Dutch
2001 GBM Landau 34' Class A
F53 chassis, Triton V10, TST TPMS
Bigfoot Automatic Leveling System
2011 Toyota RAV4 4WD/Remco pump
ReadyBrute Elite tow bar/Blue Ox baseplate