[husker boxster]

The LN spin-on filter adaptor provides 2 advantages:

1. As JFP says, it overcomes the factory bypass system. With a factory canister, at start-up oil is bypassed from the filter. With the adaptor, oil flows thru the filter at start-up.

2. If you plan to do any track days, the spin-in filter is more robust incase you do any "agricultural runs". The spin-on filter sits lower than the sump and is an easy target for anything you may drive over. The plastic canister may come out in 2nd place if it hits anything solid.