My least valuable vehicle is a beat-to-[censored] 1996 GMC Sonoma. The 4.3 V6 has 170,000 miles and leaks oil from various areas -- enough that I can't park it on our clean carport. Here's my normal oil change for this ugly beast (GM AC filter not pictured). I only put about 5,000 miles per year on this pickup, and it gets one oil change each spring. The engine still runs smoothly, but I've been waiting on the Chevy transmission to konk out for years.

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