One of several manual transmissions is the Wilson pre-selector, launched in 1930 used to be a planetary gear procedure to preselect gear ratios by working a small lever on the steering portion.  Asap hitam sebab injektor kotor,plug yang cepat hitam,air filter kotor dan minyak hitam yang naik sehingga silinder head. https://gearbox-auto49135.theobloggers.com/40037086/gearbox-auto-no-further-a-mystery