When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Just sold my C4 (the one that graces the top of this page) and went to a C5. AC Delco just discontinued the UPF44 (Ultraguard Gold) for the C5. Does anyone know if they discontinued the C4 (l-98 or LT-1) filters also? Wondering if it was just the UPF44 that wasn't selling or the whole line of filters.
Having cut apart MANY oil filters in my life, I can recommend the Mobil 1 oil filter for a very quality construction. PF52 = 201 Mobil 1, do not know about the C5s, I bought 3 UPF44s when I got mine from Ken so I wasn't aware of the discontinuation.