Thread: Fram (vs) Motorcraft

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I like Wix, they're cheap and of good quality. I don't agree with all of the information on those two webpages, but that's just on minor details.
The first page complains about a metal to metal seat on the drainback valve for the Wix filter that allows dirty oil to leak by. Most valves in the world are of a metal to metal seat and don't leak by, why should this one be a problem? Even if it did leak by, it wouldn't necessarily let dirty oil past. The oil has to slip through a very tiny gap and most of the dirt particles wont fit and will get stuck on the outside of the gap. We actually use this principle for some of the self-cleaning oil strainers on the ships. It is a stack of tightly spaced steel plates and the dirt particles can't fit through the gaps. A squeegy of sorts runs around the outside continously, knocking particles to the bottom.
On the second web page, he has a typical american v8 oiling sysem with the connecting rods drilled for oil passages to lubricate the wrist pin and piston rings. On most american v8's, the wrist pin is press fit in the rod so it needs no lubrication at that point. It pivots in the piston and lubrications is provided by oil scraped off of the cylinder walls by the oil scraper ring. Cylinder wall lubrication is achieved by oil slung off of the connecting rod bearings. Also, the crankshaft is typically one of the last parts to get oil. The cam bearings and lifters all have priority while the crank usually gets what is left over from the cam.
I know most of that had nothing to do with your questions, but I had to get it off of my chest.