The MityVac manual says that vacuum in a normal engine should be a steady 16-22 inches, so 25 sounds a bit high... but I just realized we're talking about a diesel car that uses a separate vacuum pump, so maybe it's 25 inches after all.
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300E 1986 - 117KMi
Sikkens Metallic Azurite Blue
Member #120 of MB Club VE
Caracas, Venezuela
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