Historical clue formulations

• One of eight in a B-52 — 2023-08-11
• Something that can roar or purr — 2023-02-21
• Road runner? — 2022-06-10
• Driving force? — 2022-04-12
• Its size may be measured in liters — 2021-02-28
• It must turn over to start — 2017-02-12
• V-8, e.g. — 2014-05-13
• It's often described by horses — 2014-04-18
• It may purr or roar — 2013-07-07
• V-8, e.g. — 2013-05-28
• Thing worked on in a garage — 2012-03-02
• It goes in front of a coal tender — 2010-11-25
• Metal casting housing automotive cylinders — 2010-10-21
• You might give this a gun — 2009-09-20
• It typically has lots of horses — 2009-08-30
• It turns over before it runs — 2009-07-18
• Caboose's opposite — 2009-02-15
• Power source — 2008-11-09
• Train head — 2008-08-03
• Driver — 2008-01-30
• Object of a tuneup — 2007-08-08
• Purrer — 2007-07-28
• It might be found in a stall — 2005-05-29
• Gas guzzler — 2001-01-05
• Pistons' place — 1998-02-26
• Head of a train — 1997-04-30
• Powering force — 1996-09-22
• Battering ram or catapult — 1995-01-19