A little background, I worked my way up the food chain from apprentice to mechanic to master mechanic then shop foreman, then shop manager in
37 years. I have seen all kinds of new thoughts, some worked, most didn't. We were based in the Chicago area and had nearly a thousand trucks of all makes with all types of engines. We hauled both short and long hauls.The type of heated coolant is not new... we tried that back in the seventies. Basically it was a manufactured unit but it consisted mainly of a gas fired "water heater" inside the shop with a manifold of pressure and return pipes feeding flex hoses to the exterior building of about twenty "stations" . These flex hoses were fitted with LARGE quick couplers that are just giant size air type quick couplers. these then mated with couplers mounted near the front bumper and were routed to the engine All worked good, until one driver forgot to unhook the hoses before he backed away.... ripped the hoses and pressurized coolant sprayed about 100 gallons out onto the parking area......Happened twice. We decided it was better to have electric block heaters!
Pre-oilers are not new either....Mounted on the chassis about 8 inches in diameter and 12 inches tall.... worked on the cylinder, piston, spring principle...... spring loaded check valve and an electric solenoid bypass that was engaged when the Oil pressure bypass start-up button was energized. Average engine life was the same, Didn't see ANY improvement in engine life!! about $300 bucks each then. Wasn't worth the effort
And for the what it's worth dept.......We did an EXTENSIVE research on some of our trucks back in the sixties .... We NEVER EVER changed oil in them, only the oil filter and the luberfiner filter every 50K and added enough oil to bring it back up to full, usually about 10 quarts...... which is about 1/4th of a normal 44 quart system in a Cummins truck engine. Engines lasted just as long as complete oil change types!!!
Sorry about the long post...just thought that it might shed some light...or be interesting ...Thanks!