I need to know is my 92 suzuki gsxr750 water cooled or is it an oil cooled (if thats even poosible) an where do u add coolant at ?

Your oil pressure is low if there is the correct amount of oil in it then the oil pressure sensor or the oil pump is probably at fault

The first thing you need to do is check the cooling system coolant level. If it is low or empty, there is not sufficient coolant to cool the engine or to transfer through the heater core to supply the cabin with heat. Fill it up and check for leaks. Once leaks have been repaired, change the thermostat, engine oil and oil filter. If it is full, you may need to change the coolant due to its age, as well as the thermostat, engine oil and oil filter. The reason for the oil change is due to the thermal breakdown of the oil in overheating conditions. Also inspect the water pump to ensure it is being driven by the belt. You may also have air in the cooling system that is causing all your problems. Generally only happens when the cooling system is improperly filled. Make sure you add the correct mixture of coolant and water. Incorrect ratios will cause you similar problems.Coolant protects the cooling system and the water dissipates the heat.

if oil cooler that uses coolant ck first if no oil cooler, internal gasket leak in front cover or water pump.or internal crack.

That's a good dealhttp://www.ebay.com/itm/Suzuki-88-92-GSXR750-89-96-Katana-750-GSX750F-Manual-/380301503373#vi-desc

You have a cap on the radiator and an expansion tank hiding in there somewhere. I would check them both. Your coolant should be fine, may need just a little filling. Unless you are cooking something. My bike is a 02 and I have not had to even check the coolant. Also, if you have a water temp gauge that reads in degrees and not a light, the temp of the bike should relate to the air temp, while running, not city, If it says, 185, the outside air is 85, If it reads 192, outside air is 92, etc. . Check it out.

10w40 semi synthetic of fully sinthetic

Water cooled engines allow for a much more compact construction and a defined cooling on a wider operation band.

And no. Water Cooling should not be disabled under any circumstands, except you want to kill the engine. It would be killed, even on the north pole.

Air cooled engines have a much simpler design and production costs, also much lighter usualy, But need a lot of space. Also the heat distribution can be challinging construtructive task.

Oil cooling is available for both cooling models, but usualy only with 4-stroke engines. It just adds more cooling to the engine

like anywhere else. what do you expect to hear if you are lazy to ask properly in a few sentences?
first have the engine cool down, then pour out the old coolAnt into a container like a distilled water  container. Add distilled water and coolant in proper volumes and crank up the engine. then de-aerate the cooling system and it's done

If you are adding coolant and are not seeing a leak, your leak may be internal to the engine (not good). ie. Blown head gasket or cracked head. Check your oil for signs of water, ie milky looking oil on dipstick or rising oil level even though you didn't add oil. Also do a pressure check of coolant system. If it dosn't hold pressure you have a leak someware. Get it fixed ASAP or else say good by to your engine. Also have your water pump and cooling fans ckecked as well. Don't run the AC until its fixed, it just makes the cooling system work harder. As far as the washers, the front and rear use the same container, have the pump checked as well as fuse for the pump and wipers.