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Is the 1997 F150 Transmission is the same as the 1999 Expedition
Do you mean flush the oil (not recommended) or flush the coolant?
BMW does not have a recommended millage for a transmission service on a 1997 540-I.
The 1997 Ford Expedition Owner Guide shows Motorcraft MERCON automatic transmission fluid ( it should show the type used on the transmission dipstick )
The recommended Oil for a manual transmission in a 1997 Saturn SL1 is synthetic multi-vehicle automatic transmission fluid or ATFQT. The recommended engine oil is SAE 5W-30 synthetic motor oil.
take it to jiffy lube or equivalent and have it done for you.
It is on the passenger side on the engine above the transmission, down low.
On a 1997 Ford Expedition : The 4.6 liter V8 engine uses ( 4R70W ) The 5.4 liter V8 engine uses ( E4OD )
Type your answer here... FLUSH EVERY 36,000 MILES FOR OPTIMUM SERVICE LIFE
I was looking at the 1997 Ford Expedition Owner Guide and it shows Motorcraft MERCON automatic transmission fluid for the two models of automatic transmission ( E4OD with the 5.4 liter ) I would also check to see if the type of fluid is engraved into the automatic transmission fluid dipstick
It is important to use Mercon, not Mercon V transmission oil in a '97 Expedition. It will take about 14 quarts to refill it after a complete drain.
Assuming this is an automatic transmission, pull the dipstick out and read it, it will tell you the proper ATF to use.