yes it is fine to insulate the whole water heater from top to bottom and the first two meters of hot water outlet piping.
the heater core has got a hole in it or your top has a hole init. If the water is green it is your heater core. if not it is your top.
When you call 911 water heater Katy, ensure that you will get the water heater repair services that include;Residential Water Heater repairs, Commercial Water Heater repairs, Water Heater Installation, and Replacement, Electric Tankless Water Heaters repairs, at the time your water heater is leaking from the top, leaking from the bottom, or when there is no hot water comes from the heater, or there is hot water, but it is not enough, call the trusted water heater repair service in Katy, TX, calling 911 water heater Katy.
"Does the top or bottom heater hose from the firewall go to the water pump on a 1991 Dodge Dakota V6?" The top heater hose from the firewall goes to the water pump and the bottom hose from the firewall goes to the top of the block where the temperature thermostat housing is located.
it puts cold water in and pushes hot water to the top
The top rated water heater would depend on the type required. Gas powered, Electric powered, on-demand, solar, tankless...there are many options these days.
Because heat rises - the top of the water heater will always be hotter than the bottom.
Convection
Water expands when it is heated, this expansion increases the pressure. The bladder tank absorbs the extra pressure, protecting the hot water heater.
There are two heater hoses. One goes from the head, or top of the engine, to the heater core in the passenger compartment, the other goes from the heater core to the water pump, thermostat, or some other part of the water jacket. Check the instructions for the flushing kit.
heater core
A bleeder valve to remove air in the system
From the floor to the top of the tank