Try a different approach

Using gear oil additives will minimise hard shifting, friction and wear and tear, says Liqui Moly. Clearly, they cannot repair severe mechanical damage but the chemical tools are said to achieve good results in many cases, at little cost.
The firm says when a customer comes in with complaints of hard shifting, high temperature or excessive noise, it is worth using a transmission oil additive before you do anything else as this can solve the problem in many cases.
“Many transmission problems are associated with increasing friction and corresponding wear”, explains Schönfelder, an application engineer at Liqui Moly. “It’s worthwhile to take a shot in the dark to try and solve the problem before going through a complete diagnosis. If it doesn’t work, it costs almost nothing but if it does work, you avoid long standstill times and high labour costs for trouble-shooting, not to mention the expenses for replacement parts.”

