Hi Jim -

I've meant to answer this for a while, but kept putting it off. I've used a Mobil M1-107 automotive oil filter on my Lycoming IO-320 for over ten years. Them M1-107's gasket fits the standard Lycoming spin-on perfectly. It's a premium automotive filter and, although I don't have emperical evidence, I'm certain it's superior to antiquated 'aviation' oil filter technology. It's also considerably smaller than the Champion, which might solve your interference problem.
Here are Mobil's claims from their website... http://www.mobiloil.com/USA-English/MotorOil/Other_Products/Mobil_1_Extended_Performance_Oil_Filters.aspx

1) Remove more contaminants than conventional filters using an advanced synthetic fiber blend filter media
2) Holds and remove three times the dirt versus the leading economy filter brand
3) Reduces resistance to oil flow while improving filter efficiency
4) Withstands up to nine times the normal system operating pressure

Bill Rumburg
N403WR (Sonic bOOm)

----- Original Message ----- From: Jim Nordin
To: lml@lancaironline.net
Sent: Wednesday, April 23, 2014 12:17 PM
Subject: [LML] Oil filter

Lancairians,
I have an IO-360 with a spin on filter. The filter sits above the cowl just a bit. The filter is the Champion CH48108-1. Is there another that doesn't sit so high to interfere with the cowl?
Or do I have to buy a remote?
There are other filters but what works?
Jim