MiTasol
Captain
It is from one of the Allison Service School Handbooks - and I think most are on this forum if you do a search
I have never seen anything similar covering exhaust stains but tetra ethyl lead stains tended to be off white (and varied due to differing TEL levels and mixture levels and how much oil the engine was consuming) while black indicated the engine had been running very rich.
I have never seen anything similar covering exhaust stains but tetra ethyl lead stains tended to be off white (and varied due to differing TEL levels and mixture levels and how much oil the engine was consuming) while black indicated the engine had been running very rich.