There are two lines, a main pressure line and a return line. FYI, the fluid is filtered on the return line as it re-enters the resevoir. If you trace the lines you'll find most of it is metal. Be sure the fittings are tight as those can leak too. If I remember correctly they cross over to the passenger side and work their way back from there. Happy hunting.

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LRG
1987 300D Turbo 175K
2006 Toyota Prius, efficent but no soul
1985 300 TDT(130K miles of trouble free motoring)now sold