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I DRIVE a 1999 Proton Wira (automatic) that has travelled 92,000km.
Of late, there is a substantial delay in gear engagement whenever the lever is shifted between the Neutral (N) and Drive (D) positions.
The local Proton authorised workshop has advised changing the transmission fluid but my friends are recommending gearbox additives. Who is correct?
Connie
ANY automatic gearbox that does not seem to perform normally usually means impending trouble. Delays in engaging and rough shifting are typical symptoms of a gearbox that is about to fail.
A change of transmission fluid may help improve matters in the short term but, more often than not, these improvements are short-lived.
Additives may, or may not, improve the shifting characteristic of a normally functioning gearbox. However, they are of no use when things start going wrong.
Automatic gearbox problems usually arise from a leaking or blocked valve or channel located in the valve block. A gearbox specialist may attempt clearing the blockage or renewing the valves, but frequently it is more economical to overhaul the entire box, renewing the valve block at the same time.
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