[David] I have purchased a 1988 Samuri to tow behind my motor home. Towing world's web site recommends stopping every 200 miles and running the engine for about one minute to lubricate the transmission. One mechanic told me I should unhook every 200 miles and drive the tow around the block. Does anyone have experience with this? Are there any additives recommended to assist in lubricating and protecting the transmission?