Yeah, I've heard people suggest that K&N filters will destroy engines
from people on this newsgroup, but does anyone have any evidence of
Personally, I've used a K&N filter on a pickup truck that I owned for
7 years and suffered no ill effects and I use one on my 1995 saturn
wagon. I installed it at 30,000 km and the engine still runs like new
with over 360,000 km on it.
So, having used a K&N filter on my Saturn for 9 years and over 200,000
miles, when can I expect to have my engine suddenly wear out? :-) By
the way, my head gasket developed a small leak which I had repaired.
While they had the head off, they remarked that there was no scoring
or tarnishing of the cylinders and they could still see the factory
I've been considering using one on my '84 300SD. If someone can let us
know what the real issues with these filters are, I'd really
appreciate hearing them.
I have been using a K&N for about 8 years on my '82 123 300D. I think the
biggest thing about them is they require maintenance. And like all other
maintenance items, the quality of the outcome depends on who is doing the
work. It requires a few minutes time to insure the filter is washed out well
and oiled adequately but not over oiled. With a paper filter you just pop
the top of the air cleaner, lift out the old one and drop in a new one.
Couple minutes at most.
My take... crapy maintenance with the K&N and cheap-O paper filters yield
about the same results. Likewise, good maintenance with the K&N and good
quality paper filters should yield about the same results also.
In the back yard, soaking the filter under the oak.
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