From what I've found the D1AE shows it's a 1971. For eg C1 was '61, C2 was '62, D0 was '70 etc. Thanks though as you've answered my drama without taking the heads off, a 4.9L.
6 Quarts with filter change.
The eighth digit in the VIN (Vehicle Identification Number) is the engine code.
The 1967 Ford Thunderbird was equipped with two different V8's. The 390 V8 315 H.P. was the standard engine. It is engine code Z. The 428 V8 345 H.P. was the optional engine. It is engine code Q.
An engine cylinder misfire has been detected in the # 3 engine cylinder
That's the " Windsor " 4.6 liter V8 ( engine VIN code " 6 " in a 1997 Ford F-150 ) It seems backwards to me because the " Romeo " engine has engine VIN code " W "
motorcraft.com shows : for a 1985 Ford Midsize LTD - V8 - 302 (5.0 L ) " M " engine code ( .044 inch ) " F " engine code ( .050 inch ) engine code is 8th " character " of VIN
An engine cylinder misfire has been detected on the # 4 engine cylinder
" X " - for your 4.0 L OHV engine - 8th " character " of your VIN
Code 173 indicates the oxygen sensor is telling the computer that the engine is running rich.
Diagnose the problem and fix it
engine misfire
8th " character " of your VIN