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Message: <blockquote data-quote="Hikaru" data-source="post: 741845" data-attributes="member: 22411">Mine had problems where if I go on the highway above 3000rpm for about an hour, the gearbox overheat sign will appear. If i go below 2.5k RPM the gear box will be fine for the whole journey. As what astroboy said is correct, i changed the gearbox heat changer for fear of potential mixing of collant and transmission oil causing the gear box to overheat. The gear box wasn't shifting cogs smoothly as it did before e.g. minor jerk and occasionally thumps especially from 2nd to 3rd. Now that the gear box has gone through medium overhaul, hopefully it will last me longer but i still feel some albeit minor jerk if I don't keep the revs up. If I go for it like I am doing a small standing start from 0-100, the cogs shift seamlessly. Honestly, I will live with the minor jerks and hope that nothing major will happen. Perhaps when u feel that the car is not shifting smoothly, u might want to get the mech to have a look at the condition of the transmission oil. Best to do a change instead of a flush.</blockquote>