had a fram filter on a customers car split the oring seal once. ..
mess is an understatement.
My first VW diesel, a 1980 Rabbit pickup with a/c and cap got 50,000 (bought with 103k on the inaccurate odometer) miles in 8 months before a Sears oil filter did it in. Added 5 quarts, new oil and filter and let it idle for 45 minutes. Thought I lucked out. Drove about a 1/2 mile and it sounded like marbles were poured in with the oil. Found a junkyard engine which lasted 1/2 way into Jersey, car crapped out in Staten Island and left in a junkyard.
Easy, this was 1990, way before the internet and you guys (not that I could fix it anyway...). But I LOVED that truck. My best was 48 mpg doing 70-75 on the interstate. And tha A/C was ICE cold..
Can't fix 'em, but got hooked...

Stay safe, stay well. Jimmy.