My box resists shifting on cold mornings

[patssle]

This issue has popped up for me too. It just refuses to go into 3rd gear some cold mornings until I wiggle it around or shift into another gear then try 3rd again. But then it'll be fine for another month. No other issues once it shifts into 3rd. Replaced the motor mount several months ago which can cause shifting problems.

[rdass623]

that is common on manual gearboxes which use 75w90 gear oil (also known as extreme pressure grease) use of a high quality synthetic oil will help, ford's motorcraft oil used in the miatas works very well. but the only real fix is to let the car warm up before driving it. shifting will always be heavier before the gear oil gets up to operating temp. if you leave the car idling, transmission in neutral foot off the clutch, for about two minutes before driving off it will be a lot better.