I've been stockpiling filters to cut open later. Well later was tonight. I have summit's oil filter cutting tool which I used to compare royal purple, ac delco (ecore), m1, and p1 filters. The cutting edge on the tool cut through the p1 can scary easy and the p1 filter media was extremely wavy and the others weren't.
I was shocked how well the ecore held up when used around 8,000 miles. I was really impressed by it. Is there any difference between the encores made for STP, super tech, or ac delco?
I was shocked how well the ecore held up when used around 8,000 miles. I was really impressed by it. Is there any difference between the encores made for STP, super tech, or ac delco?