your 95 320 would have been a 104.these were known for headgasket weakness.the 103 not so much.i would be tempted to replace the valve cover gasket and see where this takes them.just a suggestion.friends who can save you money will always be remembered fondly

__________________
michael cole 1980 300SD gone now but not forgotten,87tdt,90 300te 4matic 95 e320 wagon