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I had the chevy dealer perform my first oil change on my 2004. I just changed the oil myself on the second changew/Mobil 1 filter and oil. I removed the oil filter and checked the number, and it was a PF46. I checked the owners manual and it said to use PF44. Does anyone know the difference?
From: "It's 106 miles to Chicago, we've got a full tank of gas, half a pack of cigarettes, it's dark, and
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-‘18-'19
NCM Sinkhole Donor
Lots of posts in the past - you'll find tons of info if you do a search.
But - PF44 has been replaced by PF46. Delco still makes the UPF44 which is the Ultra-Guard filter. Fichtner and a few others sell singles or cases at a good price. The UPF44 filters a few microns more than the PF46. Either one is a good choice.....I use the UPF44 personally.
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Please use customer number 1206638 unless you already have your own to ensure my dealership (and thus this site) gets credit for the sale.
Amsoil filters are better than the Mobil 1 actually. The flow much more oil, which is critical in a hard driven application.