Thanks...was clean when I got it back...thought maybe oil from above came down. Out of curiosity, does your dealership work on F550 motorhomes. Appreciate the help.
2014 F-550 PSD..........M1 Delvac ESP 5w-40 + OEM
2018 Dodge Charger SRT Hellcat
2012 Toyota Sienna LTD 3.5L V6
2003 Dodge Durango R/T 4x4 5.9L V8