It is not harmful but it dangerous.
Usually if you are pulling a heavy load and you dont want the car shifting you use these. Like at a boat ramp pulling the trailer up a hill out of the water. Also if you have a load and are slowing down you can shift down into these and use the engine to help slow you down.
Yes, unless you are pulling a trailer.
Never haul are pull a load in over-drive, DRIVE ONLY Over-drive will burn the clutches up when hauling are pulling a load.
That really depends on what kind of trailer it's pulling. If it's pulling something like an RGN lowboy, or double drop trailer, that trailer may only have about two inches of ground clearance.
NO
Pulling a trailer requires more energy than carrying a heavy load.
Not unless the trailer itself is the cargo.
no those engines dont start redlining till about 4-4500 rpm, ule be fine
Trailer is way more bigger than a semi-trailer. Common misconception between a trailer and a semi-trailer. Technically, a trailer has wheels in front and rear and is hitched to a pulling vehicle (car,truck,etc.) A semi- trailer only has wheels in the rear and is hitched to a pulling vehicle (car,truck,etc.)
how much for going 70 mph while pulling trailer
Is it legal to keep your trailer hitch attached to your truck when your not pulling a trailer in New jersey?