Whenever I take a left-hand turn, my check oil light comes on for the duration of the turn and goes off as I correct and straighten out. My oil is at the perfect level on the dipstick, it's not low or anything. I dono what the deal is here but it's quite annoying at night (it isn't your dimmest bulb in the cluster..).

Doesn't matter how subtle or steep the turn is, doesn't matter what RPM I'm at, my oil pressure is good and I'm only at 200,500 miles. What could this be?

1987 300D, 6 cylinder variant.

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.:1982 300D "The Ambassador"- R.I.P:.
.:1987 300D 3.0 "Häns"- Current Whip:.
.:1967 F85 Oldsmobile "Grandpa"- Show And Go:.
.:1991 WS6 Firebird Trans-Am "Blackbird"- FOR SALE:.

The oil level sender (near the drain plug.) There were a few redesigns for this through the years on the 603 oil pan moving the sender. I read it in the CDs somewhere. If you don't mind the expense, you could put in a new sender see if it continues.

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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine)
Raleigh NC - Home of deep fried sushi!

There is some circuitry that removes "glitches" from things like cornering. I don't know where it is or what needs to be replaced, but searching for that might turn something up.

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John Robbins
'05 E320 CDI - 240k
'87 300TD - 318k

That's because the sender is on the left side of the pan.....
Left turns will drop the oil level momentarily.

The combi gage set in the IP has a delay circuit built in to keep the light from flashing under these transient conditions. It's not the sender, it's the delay that has failed.

Now that you have shown the delay to be faulty, try turning up the boost, until you can get the light to flash on acceleration!

Jim

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14 E250 BlueTEC black. 45k miles
95 E320 Cabriolet Emerald green 66k miles
94 E320 Cabriolet Emerald green 152k miles
85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles

....it's not an oil "pressure" light, it's an oil "level" light.

Jim

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14 E250 BlueTEC black. 45k miles
95 E320 Cabriolet Emerald green 66k miles
94 E320 Cabriolet Emerald green 152k miles
85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles

on my car there is a steering link that runs right there. My level light sensor lead hangs pretty low... i could see how this might bump it or otherwise move it to cause an intermittent short/open circuit. Also mine is soaked with diesel oil, neglect from the previous owner. So while my light doesn't come on I could see how one might have issues. Try rerouting the harness so there isn't as much free length on it, zip tie it to something else so it can't move around and see if that helps.

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2003 Dodge Ram 2500 Cummins - Georend fully built trans, Banks Big Hoss Bundle, Smarty Tuner, 5" turbo back exhaust. 500 HP and 1100 ft/lbs to the ground.
1979 Mercedes-Benz 300CD - Lost to a four car pile up on 275, Thank You Michigan Drivers.
1986 Mercedes-Benz 300D - Sold, Euro non-turbo car.