I was just changing my oil on the '94 wagon and was pouring the new oil in when I thought I saw something from the corner of my eye other than oil come out of the plastic jug. I looked at the foil liner which I popped open and pushed back and it looked like all of it was there. Why don't funnels have built in filters or screens and do most of you filter the oil before pouring it? I'm nervous now. Would any foil pieces get trapped by the filter and spare the engine or would they block one of those little oil return holes?

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dtf
1994 E320 Wagon (Died @ 308,669 miles)
1995 E300 Diesel (228,000)
1999 E300 Turbodiesel ( died @ 255,000)
2006 Toyota Tundra SR5 AC 4X4 (115,000 miles) rusted frame - sold to chop shop
2011 Audi A4 Avant (165,000 miles) Seized engine - donated to Salvation Army
BMW 330 xi 6 speed manual (175,034 miles)
2014 E350 4Matic Wagon 128,000 miles
2018 Dodge Ram 21,000 miles