Yes it's common, no, it's not neccisary, but it does extend your drain intervals from five k to ten k.
My suggestion is don't cheap out in regular maintenance, just do it faithfully and she will be good, also, get a good oil filter wrench, seriously, I fought my oil filter for a week, and it wasn't my first rodeo either.
Purchased 11/15/12: Totaled 7/24/14 2004 LB7 CCSB ATS 4000 Turbo
Diamond Eye 4 inch turbo back exhaust
Moog problem solver upper and lower ball joints
Blistein 5100's up front
H2's Michelin 265/70/17 E, Ranch hand front bumper. EFI LIVE by Kory Willis
Purchased parts awaiting install:
Special thanks to:Brent@LDS
, mrmanners@Synthetic Motorsports
, and Kory Willis@latuning
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