dextron / mercon type 2
Between the engine and firewall labeled TRANS. Under the Air Filter/ Intake box there is a red cap on the transmission for putting in fluid. There is no dipstick that I know of on a 1999 Cutlass w/ 3100 "J" motor.
8 quarts
To replace the transmission fluid in the 1999 3100 V-6 Olds Cutlass, first remove the transmission drain plug from the underside of the vehicle. Drain all of the old fluid. Then, replace the drain plug and add new fluid through the transmission dipstick holder in the engine compartment.
The oxygen sensor on the 1999 Oldsmobile Cutlass Sierra is located on the lower exhaust. If you need to replace it, they are available for about $20 online.
You can't, you have to get it serviced after 100,000 miles..Yes I know it is stupid.
There is no transmission dipstick. They have a sealed transaxle. You should never have to add or replace fluid.
The 1999 Olds Intrigue does have a dipstick. Use a funnel to add fluid as needed into the dipstick tube.
DEX-COOL
None
The 1999 Oldsmobile Cutlass OBD 2 port is under driver side dash left of steering column
Transmission fluid is inside the transmission.
Begin by loosening the tensioner pulley on your 1999 Oldsmobile Cutlass. Put your serpentine belt around the pulleys. Tighten the serpentine belt with the tensioner pulley.