[MBZ] replacing glow plugs on a 603

[Kaleb C. Striplin]

Ok, need to replace them on one of my cars.  Im probably going to remove 
the intake manifold.  Does the gasket have to be replaced each time the 
manifold is removed or will it last a while like a valve cover gasket?
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Kaleb C. Striplin/Claremore, OK
 89 560SEL, 87 300SDL, 87 300SDL, 85 380SE,
 85 300D,  83 300TD, 81 300TD, 81 240D, 81 240D,
 76 450SEL, 76 240D, 76 300D, 74 240D, 69 250
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