red transmission oil. no need for iso 40 hydraulic oil, red is light weight and that's the trick. simple,,getting to the resovoir is another story,usally throught the rear side panel or if your luckey, the trunk rear cover below the rear window....either way you need to buy a tool for the correct way to remove the panels.
red
The fluid used in the hydraulic system for the convertible top of a 1966 Ford Mustang is typically a hydraulic fluid, often referred to as "convertible top fluid" or "hydraulic top fluid." It's important to use a fluid that is compatible with the system, commonly either automatic transmission fluid (ATF) or a specific hydraulic fluid recommended by the manufacturer. Always check the owner's manual or service documentation for the precise specifications.
According to the 2000 Ford Mustang Owner Guide : ( Motorcraft MERCON automatic transmission fluid is used for the convertible top )
The convertible top motor uses automatic transmission fluid.The convertible top motor uses automatic transmission fluid.
You can add hydraulic fluid to Porsche convertible top motor by popping open your engine hood and then pouring the hydraulic fluid into the appropriate compartment.
Automatic transmission fluid.
HSHC Fluid
MB hydraulic fluid
To add hydraulic fluid to the convertible motor of a 1998 VW Cabrio, first locate the hydraulic fluid reservoir, which is typically near the driver's side of the engine compartment. Remove the cap from the reservoir and check the fluid level; if it's low, add the appropriate hydraulic fluid until it reaches the recommended level. Be sure to use the fluid specified in the owner’s manual to avoid any damage. After adding fluid, replace the cap securely and check for any leaks.
To add hydraulic fluid to a VW convertible top, first locate the hydraulic fluid reservoir, typically found in the trunk or near the convertible top mechanism. Use a compatible hydraulic fluid, ensuring it meets the manufacturer's specifications. Remove the reservoir cap, add fluid slowly until it reaches the recommended level, and then replace the cap securely. Finally, operate the convertible top a few times to ensure proper fluid distribution and check for any leaks.
According to the 2003 Ford Mustang Owner Guide : ( Motorcraft MERCON automatic transmission fluid is used for the convertible top )
To change the hydraulic fluid on a convertible Jaguar XK8, first, ensure the vehicle is on a flat surface and the engine is off. Locate the hydraulic fluid reservoir, typically found near the trunk area, and remove the cap. Use a syringe or pump to extract the old fluid, then refill the reservoir with the appropriate hydraulic fluid until it reaches the recommended level. Finally, operate the convertible top several times to circulate the new fluid and check for leaks.