Mercedes-Benz 300SEL Problems

Engine Oil and Coolant Leaks Resulting in Fulid Intermix on Mercedes-Benz 300SEL

Problem Description and Possible Solution

Internal and External engine oil & coolant leaks can develop from the head gasket and/or timing cover gasket; these leaks should be repaired before the engine oil and coolant intermix which can result in severe engine damage.

(5 people reported this problem)

Mercedes-Benz 300SEL Vehicles With This Problem

RepairPal Verified
Average mileage: 141,000 (75,000–207,000)
2 model years affected: 1990, 1991
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Brake problem? Or maybe a faulty head gasket cylinder?
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Viewing 1-2 of 2 comments
To day I was told by my mechanice that the 1990 merecedes 300 sel need head gasket
how much will take to fix it. if I will open the head gasket my self and have the shop to fix for me and with the help other mechanice to put on for me.
head gasket leaking again. Had to be replaced about 50,000 miles ago. Leak is at front right of engine (Bermuda triangle) Oil leaks in this area are notorious because of poor engine design - horizontal and vertical gaskets coming together.