RepairPal Certified shops can diagnose and repair your 1993 Mercedes-Benz 500SL. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
This could be a line pressure or valve body issue. This model will require a shop that is very well versed in older Mercedes.If you prefer to bring your car to a shop, then use this link to find a good one near you.
https://repairpal.com/repair-shops
Alex