There are 2 O2 sensors on the s-series. One on the exhaust manifold and one after the catalytic converter.
Dex-cool
No, it is not a knock sensor at all. An AF (Air/Fuel Ratio) sensor is also know as a wide range oxygen sensor. It is the newer type oxygen sensor.
Oxygen sensor
5w30
If you follow the exhaust pipe out from the back of the engine you will see a cable going to the oxygen sensor in the exhaust pipe. You will need a special type of socket to remove the oxygen sensor which you can buy at an auto parts store.
1.9 Single Overhead Cam 4 Cylinder
well, the type of ur car depends on it. if u hav ur 1998 saturn, then if its automatic go to ur local wal-mart or auto store and get automatic transmission fluid, if its manual do the same as above and get manual transmission fluid
SENSOR IS ON TOP OF THE TRANSMISSION -JUST BELOW THE BACK OF THE BATTERY
Go to autozone.com type in oxygen sensor and it will allow you to pull up a diagram of all o2 sensors
YA!
on my 94 it was near the oil filter and it was a canister type like your oil filter
Saturn has a "MACHEESEMOE" type color