ATF Fluid Change - 146k miles
Catching up on some maintenance, this is something I wanted to do. I’m the second owner and I believe it’s on the original fluid. It was shifting fine but now it’s extra smooth and I have additional peace of mind.
This guide was a great resource
ATF Exchange (using the cooling line). Here’s some additional thoughts on my process.
Drained pan via drain plug - a little over 3Qts came out. It was black and I suspect it’s never been replaced.
Refilled what came out via fill plug with 3/8 tubing and funnel up top. The flow was nearly as fast as me pouring it in.
Turned the truck on and drained 2 Qts via transmission cooler into a jug. I found using this connection to be a lot easier than crawling under the truck. This took about 25 seconds.
Replaced 2 Qts via funnel.
Repeated these steps (2 Qts out / 2 Qts in) until I exchanged a total of 13.5Qts. It started to look a lot cleaner towards the end. I saved the extra half quart to overfill and drain via the overflow plug.
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