VW sells the oil at $25/quart. Another VW book I read said Dextron III Power Steering fluid is fine. If you have low oil and the top doesn't work look out for hose leaks and hydraulic cylinder leaks! Cylinders are behind panels next to rear seat. It's a closed system and should not become low.
By the way putting in the fluid is a drop at a time situation, a real pain in the ___
The 98 Cabrio has a sealed transmission, it does not have a dipstick.
Yes, it is part of the oil pump inside the engine.
classification pump used in oil industries
Amsoil
The oil pump is located at the front of the engine (belt end) at the crankshaft. It is behind the dampner and pulleys. This is a major job and the pan must come off as well as most of the parts on the front of the engine.The oil pump is turned by the crankshaft. RB
Low oil pump pressure due to crankshaft bearing bad
4 quarts
SAE 10w40 any major brand.
According to the 2000 Ford Mustang Owner Guide : ( Motorcraft MERCON automatic transmission fluid is used for the convertible top )
4.4 quarts
10/30
four