I once did the oil cooler lines on both my 300SD after the first car's hose burst unexpectedly on the freeway.

I did everything carefully, but 6 months later the other car's hoses that I had so carefully replaced burst as well!!!

I don't know what I did wrong but I will never attempt the oil cooler lines again...too scary to lose all your oil like that.

Had to get both cars towed to the garage to have them fixed by dealer. Now, no problems in over 5 years.

These lines are too fragile and too important to have anything go wrong.

I wonder if the part I installed was defective? or did I not do something correctly? I bascially did everything rs899 stated in his post.

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1) 84 300SD 285K+ Miles (Ver Calif)
2) 84 300SD 175K+ Miles (Ver Federal)