At the oil change place, they always try to sell me a bunch of goodies. Today it was the following:
- Flushing the oil system...
- Flushing the cooling system...
- Replacing the automatic transmission fluid...
- Replacing the PCV valve...
This seemed like an awful lot of flushing -- of my money down the toilet. I declined all of this stuff. Now for the question: Which, if any of these things, are worth doing? If so, how often or under what set of symptoms? Can I do the tranny fluid myself without too much cussing? I don't do the oil because the filter is inaccessible without putting the car up on blocks.