Hagerty Blog Piston Slap: Did An O-Ring Sideline A Ford Super Duty?

David writes: Hello there, I appear to have a seasonal issue with my 2013 Ford F-250 Super Duty XLT 4×4. During warmer months, when it's 50 degrees and above, my transmission engages just fine and doesn't slip. Now, during the winter months, not so much. If I don't run my truck for at least 20 [...]