This one family car has 500,000-plus miles, all in California. While the car wasn't babied (a daily driver until mid-90s), it was well-maintained. Always garaged, wiped down with a chamois after most drives and washed/waxed on regular schedule. What you see is the original Dark Moss Green paint and second white vinyl top (photo taken January 2015). C-4 transmission and 2.81 rear diff gears were replaced once as far as I can tell.
The first motor died at 250K (flat camshaft). A Ford factory remanufactured 289 long block was installed in the early 80s; now has 250,000 plus miles on this engine. The second engine still runs strong and smooth, consumes little oil. When plugs are changed, they're clean (T/E still works). Currently 3,000 miles since last oil change and down 1/2 quart or less. (I need to pull the starter one of these days to read the block casting number and date code to determine what the factory sold with its reman service replacement block).
I don't know all the tricks my father used in maintaining the car. He was a diehard Ford man (owned many classic flathead Fords including '34 Phaeton, '40 Deluxe Convertible, '50 Custom convertible). He almost ordered the '67 convertible; decided in the end to go with the vinyl hardtop look ("looks like a 'vert, safety and comfort of a hardtop...").
I do know a few maintenance techniques used on the car:
- Swore by Rislone engine treatment. When a quart low, he'd top off with Rislone, drive 1,000 miles more, then change the oil and filter.
- After the first motor died at 250K, he always used Valvoline 20W-50 racing oil in the replacement engine. He thought Valvoline racing oil with its high zinc content helped flat-tappet engines (flattened camshaft killed the first motor).
- Usually wiped the car down with chamois and fresh water with a cap full of liquid wax after a drive.
- Weak spots on the car he always seemed to be repairing: charging system, HVAC vacuum motors, power steering hydraulics. (Each of these sections in his Ford shop manual had lots of margin notes and underlining!)