How much should a secondary filter run me in $$? Are they a finer filtration rating than the primary?

Do I just unbolt the top and pull out the canister, or is more involved? I'm a bit intimidated about messing with all the plumbing lines and there seems to be some things running into the top of it.

I live really close to a big mercedes shop which has a great walk-in parts counter, so I should be able to just walk over and buy a secondary. Thanks for that tip. It hadn't occured to me to change that one out also.

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- Theo
- Fins make 'em fast! (looking..)
- '65 190-Dc
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