No. Coolant should not leak from the oil sending unit. the unit's purpose is to send a pressure reading to a guage or, in case of a warning light, turn it on in the event of an unsafe drop in oil pressure. no anti-freeze coolant should come from this unit. if there is, you are most likely looking at the temperature switch or sending unit and not the oil sending unit. however.. if there is a mixture of coolant and oil comming from it that has a milky look to it then you have coolant seeping into your oil which indicates a blown head gasket, cracked or warped head, or a cracked block.
Yes, it can leak at the sending unit.
A low coolant level could cause the temp gauge not to read correctly. A faulty temp gauge sending unit could also be the cause. The coolant leak, you would have to find the source of the leak to determine the cause.
Yes,if the sending unit is the source of the leak.
Yes it can
It developed an leak and then for whatever reason sealed itself. Replace the oil pressure sending unit.
Yes, and when it does it must be replaced as it is defective.
All oil senders can leak. Make and model makes no difference.
The temperature sending unit for a 1995 Chevy Beretta is on the front of the engine. It is between the front of the engine and the radiator inlet/outlet.
below top end of radiator hose.
The temperature sending unit on the 1995 Escort is on top of the engine. It is mounted at the thermostat housing, where the top radiator hose comes in.
The fluid is probably contaminated with water. Change out the fluid with fresh. Check often, if froth returns suspect a leak in the system that enables water entry from either the road or If the unit has a cooler in the radiator, the cooling system.
The unconnected hose is supposed to be unconnected. It is for overflow when the radiator overheats. You may not have a leak, it may be overheating because of cooling fan, thermostat, temp sending unit or something else. May just be overfull and running out when hot.