I've had one on my '95 Saturn since it had about 30,000 km and it now
has 348,000 km. The engine runs great, although I don't know if it's
made any real difference in performance or mileage. It has saved me
from buying 8 or 10 air filters at $30 CDN apiece from the dealer.
I've been considering putting one on my '84 300SD. The dealer wants
$50 for a conventional filter and a K&N is $77. Has anyone used one on
I got it in my car for 30,000 miles so far... I know my engine is a bit
more responsive... fuel mileage went up a little bit... maybe 1 or 2 MPG.
It beats those brittle paper filter... although the paper filter traps more
gunks. I really don't think it is that much of a difference in those
particles that got through... they get burned and then out the exhaust.
Diesel engine probably benefits more from K&N filter... also those weaker
Only thing you have to remember is to clean that air filter with K&N
detergent and then oil it with K&N filter oil for best protection.
Letting the engine inhale particles is exactly what you don't want - unless
you want a good reason to rebuild your engine? They don't all get burnt,
think about driving through a cloud of sand or similar grit... it would
make short work of anything inside your engine.
K&N filters flow more air whist 'aparently' doing as good a job of
filtering the air from particles as the paper style.
If you flow more air, you need more fuel to mix with it, this doesn't
necessarily mean less M per G overall, as you may be producing more power
lower down in the rev range, but you'll often find it does.
You should experiance more power as a result though, especially if your
engine is all EFI and can correct the air/fuel mixture properly.
I've only had a K&N in one car, and it made a decent enough difference :)
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