I have a change oil warning on a dodge caravan

The switch inside the oil pan is shorted out most likelyJohnny

6000 miles ,cheapest oil and a oil filter every third oil change

My 1997 Caravan manual states that the trans fluid capacity is 8.5 quarts. However, in the transmission oil change section, it says to drop the pan, drain the oil, replace the filter and add 4 quarts of new fluid. This tells me that the torque converter is not draining so you are in fact, only changing "half" of the transmission fluid.

New cars and truck manufactures recomend differend types of grades of oil when the engine is new. What they don't tell you when the engine receives 30,000 miles on it the grade of oil can be changed for better lubrication. Use 10w30 for normal use upon changing oil.

5000 is too long in between oil changes for that vehicle. Change it every 3000

no,you don't drain oil,depending on which engine you have it is usually beside the oil filter,it just screws in the block.

May be the oil pressure sensor is bad, but i think it is worn or damaged oil pump.. Try to replace the sensor, if no change, then the pump or all the engine is bad - so replace or rebuild it..

WHEN SERVICE VECHICLE LIGHT COME ON.THE DEALERSHIP HAS TO CHECK OUT EMISSION CONTROL SYSTEM.MAKE SURE ALL EMISSION COMPONENTS IS WORKING PROPERLY.THEN THEY HAVE TO RESET SERVICE VECHICLE LIGHT WITH A SPECIAL SCANNER.

Is it the "oil change req." light? Your owners manual will have the process for reseting the oil change light.
If it is "service engine soon" light, the vehicle will need to be scanned with a professional scanner.

no that is a warning of low oil or low preasure the oil filter can be the problem some of those places use a very cheap filter and some even use very cheap oil that thins badly when hot check your oil level then have the oil changed using oil from a bottle not the usual bulk and take a good filter with you i.e. fram wix purolator...