I like Gunk Engine Degreaser. I just cleaned two trannys and two t-cases. Does an impressive job in my opinion. I spray it and let it sit. I spray again and hit it with a brush. Then rinse with a garden hose. Wish I had taken before and after pics. Wife thought I bought more parts.
"It's not that it's able to do the job. It's that it does the job so well"
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