PF44 or PF46
Melting Slicks
Joined: Jan 2004
Posts: 3,225
Likes: 0
From: Currently living in and loving... Chico, CA
Well, now, you can still get a 44...but it will be a UPF-44, which will do a better job of filtering for you than the 46. Worth the extra scratch, IMO, and all I use. 
Administrator
Joined: Mar 2001
Posts: 367,947
Likes: 24,705
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Yes, they are the same. The 46 replaced the 44.
Drifting
Joined: Jul 2002
Posts: 1,649
Likes: 15
From: My Garage. Upstate, SC
Originally Posted by Wolfmanjohn
Well, now, you can still get a 44...but it will be a UPF-44, which will do a better job of filtering for you than the 46. Worth the extra scratch, IMO, and all I use.
While the UPF-44 (synthetic) is still available, the PF-44 has been discontinued. The 2004 Corvettes came off the line using the PF-46.
Race Director
Joined: Nov 2003
Posts: 12,346
Likes: 5
From: Mustang OK
Originally Posted by Trigger Creep
While the UPF-44 (synthetic) is still available, the PF-44 has been discontinued. The 2004 Corvettes came off the line using the PF-46.
I use the UPF-44 but either will work.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
