A few weeks back I started noticing some odd behaviour of the auto box - at flat out joining the motorway as it went through the top end of third gear it would start making funny slip-lock-slip-lock feelings as it was about to shift into the 4th and final gear. (4HP24)
With some help from Shogun, I discovered that this box isnt sealed and has an odd locking dipstick. Took her for a run today and let the box warm up, then checked the dipstick - which came back -at- the lower mark with the engine running.
The fluid is just starting to burn up, having gone a light yellow-brown colour when soaked up in white paper. I dont think the fluid's been changed from newtime to do a partial change I think... though at 150k miles it could be risky...
What do you guys reckon? Drop the sump and change the fluid without flushing the torque convertor just to refresh the fluid?
Have topped off the gearbox with D3 Dexron, which was fun in the ice
Some nicely stained pink snow out there now!
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