63/64 Cadillac Website

Correct Hydraulic fluid for 63 convertible top motor

I had a top motor issue due the resevoir being topped up by an upholstery guy with a fluid that was not compatible with the fluid already in the pump. The mixed fluid turned to foam after one going up once and could not lift the top back up. I removed the pump. How do I clean out the old fluid in the rubber hoses going to either side of the pomp? They seem to be mostly empty now but don't want to have nay more foaming issues. WHAT IS THE IDEAL HYDRAULIC FLUID TO USE IN THE MOTOR? The foaming started after Dot 3 was added to the half filled reservoir I see CHF 11S on the Advance Auto site. I also see Pentofluid EHF online as being for Top Motors. What might you recommend? John at juancull@aol.com

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Permalink Reply by Kurt on August 18, 2023 at 4:14pm

See this post: https://6364cadillac.ning.com/forum/topics/1964-convertible-top-ope...

Looks like it would be either brake fluid or transmission fluid. Based on what you reported, you probably had transmission fluid originally but I'm no expert on this topic.

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