oil changes and air cleaners

[160B]

FWIW

Here is an economic analysis of changing oil for 4500 miles every 500 miles without an a K&N air cleaner and changing oil every 1500 miles with a K&N air filter.

W/O K&N air filter oil change every 500 miles
Air filter cost $0.0
9 oil changes @ 4 qts $2.55? qt = $91.80

W/ K&N Air Filter
Air Filter cost $48.99
Air maze filer housing $24.95
3 oil changes @ 4 qts $2.55? qt = $30.60
Total cost $104.54