Hi - Considering adding a bottle of cleaner additive to my fuel - the usual STP complete engine cleaner - my beast is a 1973 ex military series 3 - what Id like to know is is this a mistake on an engine this old ?? Will it clean years of gunk where I might not want it cleaned and open otherwise well-sealed-against-leaks areas ? Its the original engine not a blue painted recond job.
She runs well - does not like starting first time in the cold ( dont we all ? ) and tends to idle after switch off a couple of times. I think a new distrib. might cure that as timing has been adjusted several times but she tends to lapse back after a few months to old habits !!
S.