My 1988 260E is using 1.5 qt every 700 miles, the dealer did a compression test with the following results 1-160, 2-160, 3-100, 4-120, 5-160, 6-100, he said i need a new engine?, oil pressure when running is at 3, idle about 2 when hot, using 10w40 oil change every 3,000. engine runs like a top other wise no visible smoke coming out exhaust. what do you think?

benzowner,

If you have records on this engine, you need to look to see if it has ever had the valve seals upgraded. There were drastic problems with these engines, and it needs upgraded valve seals. Although the compression test reveals some weak cylinders, I wouldn't throw in the towel on the whole engine. My 300E, the same basic engine, had poor oil consumption which was radically improved by the valve seal upgrade.

If your dealer is not aware of the problems with the valve seals on these early M103 engines, they are not knowledgable enough about the breed to be entrusted.

Check into the valve seals.

Good luck,

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Larry Bible
'84 Euro 240D, 523K miles
'88 300E 5 Speed
'81 300D Daughter's Car
Over 800,000 miles in
Mercedes automobiles