maintenance check
1) should I change spark plugs
2) should I change spark plug wires?
3) should I change both of them?
4) should I replace something else (like air filter, fuel filter, etc...)
to make my car run and breath better
I looked around, and it looks like people are saying not to change them. I don't think they were ever changed, or they might, I am not sure, as I bought this car a year ago when it had 100K. So I'm looking for any advise.
You can't save a bad transmission but if yours is good changing the fluid and filter won't harm it and will prevent it from going bad.
Mercedes even issued a tsb for the same transmission in the w211 models to change the fluid and filter at 39k miles and you as well as most of our w210's are well past that.
Lifetime fluid was a joke....change it and find a new indie mb shop that knows of what they speak.
Change plugs no need to change wires,use the special boot tool to remove the wires from the plugs or you will damage the wires and then you will need to replace them

DIY plug change also on benzworld.org
Use single electrode platinum plugs bosch 7422,ngk 7090 and don't use anti-seize.
Probably time to flush the brakes and the coolant zerex GO5 50/50 mix.
Inspect belt and hoses.



