2002 Saturn SL Sedan Engine Knocking

My girlfriend's car has had a knocking engine for some time now - when you actuate the clutch to shift the knocking is more pronounced.
The knocking is getting worse today, and I've suggested a fuel additive to clean out the fuel system, and to get an oil change and add an anti-knock oil additive -

I've read threads about the knock sensor, and her engine light is on. Problem is she is 3,000 miles away and I am trying to help.

Any other things I can tell her? Thanks Prof

The engines on the s car usually knock due to lack of oil, did you get her to check the oil level? Iv seen these engines run on a half litre of oil

My girlfriend's car has had a knocking engine for some time now - when you actuate the clutch to shift the knocking is more pronounced.
The knocking is getting worse today, and I've suggested a fuel additive to clean out the fuel system, and to get an oil change and add an anti-knock oil additive -

I've read threads about the knock sensor, and her engine light is on. Problem is she is 3,000 miles away and I am trying to help.

Any other things I can tell her? Thanks Prof

HAVE HER CHECK HER OIL!!

S-series dont die, people kill them because they dont keep up on the oil!!

Also tell her to go to autozone and get the SES Code. Post it.

Guys thanks so much for the reply - her car is in the garage - blown engine.
I actually think in the end you all are right - she never changed the oil and just ran it. She's getting a reman engine and I am going to make sure she changes her oil (actually I will get it done) from now on - even though she's 2,000 miles away!
Thanks guys - Prof

Oh man :( Sorry for that. Good luck!