Need to know full oil change, transmission fluid levels, thanx Freddo

If he doesnt know the difference between engine oil and transmission fluid, he should probably avoid changing any more fluids.
He should be able to check the transmission fluid level and oil level to make sure both are correct. If there is engine oil in the transmission then it needs to be drained before you run it. Fill with trans fluid and drain again. Then fill with fluid and hope for the best.
I would start by checking all fluids to be correct and at proper levels.
I'm not sure what you mean about "the valve".

This may just be a low fluid level or wrong fluid , i doubt the wrong fluid would cause this condition so fast but make sure the fluid is full and if it is and all connections are on and nothing was knocked off then i would say the new fluid may have washed away build up or dirty is flowing in ****** and know something is the valve body is stuck,
The problem with some of these shop, mostly the quick lube shops is that a transmission should be flushed not drained and refilled, the problem with the drain and fill is that you never get all the old oil out. there is oil in the lines and cooler and in converter. what happens is the new oil detergents mix with the old oil and cause the drit in the oil to flow into valve body and pump and after time cause a problem, this happened so fast that i would check the level and make sure that all connections are on and nothing got knocked off. otherwise it sounds like you may need a rebuild on this transmission.how many miles on this car? Good day.

5 QUARTS FOR FLUID FILTER CHANGE. IF REPLACING TORQUE CONVERTER OR TRANSMISSION OVER HAUL. YOU NEED 13.8 QUARTS. WHEN YOU CHANGE FLUID AND FILTER.BESURE YOU HAVE TRANSMISSION FLUID LEVEL TO THE FULL MARK BEFORE DRIVING VECHICLE.LET ENGINE IDLE UNTIL GET WARM BUT CHECK TRANSMISSION FLUID WHILE ENGINE IDLING.IF FLUID LEVEL DROP A LITTLE ADD A LITTLE MORE TO GET FLUID LEVEL AT FULL MARK.ONCE ENGINE GET OPERATING TEMPERATURE.SHIFT TRANSMISSION THROUGH ALL GEARS TWICE ONE AT A TIME.CHECK TRANSMISSION FLUID LEVEL.SHOULD BE ON FULL MARK.DRIVE VECHICLE FEW MILES CHECK FLUID LEVEL.IF FLUID LEVEL.FULL YOU GOOD.IF STILL LOW ADD A PINT AT A TIME.ONCE FLUID LEVEL CORRECT. SHIFTING OKAY TIME PLAY.YOU GOOD TO GO.

TO DO A TRANSMISSION FLUID CHANGE YOU NEED HAVE TRANSMISSION FLUID ON HAND YOU NEED TRANSMISSION FILTER AND GASKET.YOU NEED 3/8 WRENCH THE RATCHET TYPE WITH METRIC SOCKETS. YOU NEED JACK TO RAISE VECHICLE SUPPORT VECHICLE ON JACK STANDS.YOU NEED A DRAIN PAN. ONCE YOU GET VECHICLE OFF GROUND.PLACE DRAIN PAN UNDER TRANSMISSION OIL PAN REMOVE OIL PAN DRAIN BOLT.LET FLUID DRAIN OUT IN DRAIN PAN THEN SCREW DRAIN PLUG BACK IN PLACE DONT OVER TIGHTEN.REMOVE OIL PAN AND GASKET. BESURE TO HAVE PAPER TOWEL ON HAND.MAKE SURE TRANSMISSION OIL PAN GASKET SURFACE CLEAN BEFORE INSTALLING NEW PAN GASKET. ONCE TRANSMISSION OIL PAN REMOVED. REMOVE THE OLD TRANSMISSION FILTER INSTALL THE NEW FILTER.THEN WITH NEW GASKET ON OIL PAN IN PLACE.OIL PAN NEED TO BE CLEAN SO THE GASKET ADHESIVE WILL HOLD PAN GASKET IN PLACE WHILE INSTALLING PAN AND GASKET TO TRANSMISSION.INSTALL OIL PAN BOLTS INSTALL THEM CRISS CROSS TORQUE PAN BOLTS TO 7 TO 10 FT LBS. LOOK IN OWNERS MANUAL FOR TRANSMISSION FLUID CAPACITY.BUY 10 QUARTS .TO BE ON SAFE SIDE SO YOU WILL HAVE ENOUGH FLUID ON HAND. IF YOU DONT HAVE NO TRANSMISSION FLUID CAPACITY. ADD 7.5 QUARTS FLUID.WAIT FOR 2 MINUTES.CHECK TRANSMISSION FLUID LEVEL ON DIP STICK. SHOULD BE ON THE FULL MARK.CRANK VECHICLE UP.LET IDLE FEW MINUTES CHECK TRANSMISSION DIP FLUID LEVEL IF DROPPED ADD LITTLE MORE.WHILE ENGINE IDLING GETTING WARM UP. KEEP EYE ON FLUID LEVEL.WHEN FLUID LEVEL STOP DROPPING. APPLY BRAKES HOLD FOOT ON BRAKES SHIFT THROUGH ALL GEARS TWO TIMES. THEN CHECK FLUID LEVEL SHOULD BE ON FULL MARK.CHECK FOR LEAKS WHILE ENGINE RUNNING.

what does the top of the brake fluid cap say. theres not a lot of difference, dot4 is a better fluid.

small bolt at the side of the gearbox, you need to remove it and use a long hose to feed the oil into the box.

you dont ---end of story it should never need changing on a modern vehicle ,unless you take the drive shafts out to do a clutch then you top it up through a filler plug at halfway level on the gearbox ,Dont make work .

with car running in park and warm remove the oil dip stick tube and check the fluid level remove the fluid with an old rag or a paper towel then stick it back in, pull out again and hold perpendicular to the ground so the fluid will not run up or down the stick, turn it so you can see the fluid level. if it is full your OK also look at the fluid, if it's brownish color and smells like burnt onions yo need to have the filter and fluid changed or you will damage the transmission. A transmission fluid and filter change costs about $150.00 average and also have them to add Lucas Transmission oil treatment so it will condition the bands clutch packs and seals, most cars need the fluid changed every 30,000 miles to make the transmission last the lifetime of the car. This is the most overlooked service on automobiles besides doing a routine tuneup.

Are you sure that it is oil and not transmission fluid? The stains can look similar unless you actually get down and touch the fluid. If it is reddish in color then it is transmission fluid, which means you have a leak somewhere in the transmission. Either way, check your transmission fluid level and make sure it is not low. If it is is low, add some fluid and bring it to a transmission specialist to help diagnose and correct the problem.

Please check your transmission fluid level after your truck has warmed up. The oil on the transmission stick should be red in color and not brown. The fluid on the transmission stick should be near the full level or at the full level when the engine is hot. You may need to have your transmission fluid changed along with a new tranmission screen in the transmission pan. Let me know if you will be doing the change of the tranmission fluid yourself or not. If you are I will be glad to outline step by step on how to do it.