Hi! JKU (2013) with diesel engine and auto box, getting Hot Oil warning on longer journeys : swopped tbv for the Missimoto version (which made it worse?) but could be torque converter issue - however, no transmission oil dipstick supplied (dealer tool only) so can't check the oil (have had the fiter cleaned) - any ideas on how to do this? the part i oerdred from Amazon was too long. Based in the UK